(CNN)Here’s a look at Islamic State in Iraq and Syria (ISIS).
Facts:Started as an al Qaeda splinter group. Also known as Islamic State in Iraq and the Levant (ISIL) and Islamic State (IS).ISIS aims to create an Islamic state called a caliphate across Iraq, Syria and beyond. The group implements Sharia Law, rooted in eighth-century Islam, to establish a society that mirrors the region’s ancient past. Read MoreISIS is known for killing dozens of people at a time and carrying out public executions, crucifixions and other acts. READ: ISIS goes global: 90 attacks in 21 countries have killed nearly 1,400 peopleISIS uses modern tools like social media to promote reactionary politics and religious fundamentalism. Fighters are destroying holy sites and valuable antiquities even as their leaders propagate a return to the early days of Islam. In 2014, ISIS controlled more than 34,000 square miles in Syria and Iraq, from the Mediterranean coast to south of Baghdad. In early 2016, the United States calculated that ISIS had lost 40% of its 34,000 square miles of territory.In 2015, ISIS was believed to be holding 3,500 people as slaves, according to a United Nations report. Most of the enslaved were women and children from the Yazidi community, but some were from other ethnic and religious minority communities. ISIS’s revenue comes from oil production and smuggling, taxes, ransoms from kidnappings, selling stolen artifacts, extortion and controlling crops.READ: Inside the $2 billion ISIS war machineLeader:Abu Bakr al-Baghdadi.Is reportedly based in Syria.Baghdadi was detained for several months in Camp Bucca, which was a US-run prison in southern Iraq. He was released in 2004.Timeline:2004 – Abu Musab al-Zarqawi establishes al Qaeda in Iraq (AQI).2006 – Under Zarqawi, al Qaeda in Iraq tries to spark a sectarian war against the majority Shia community.June 7, 2006 – Zarqawi is killed in a US strike. Abu Ayyub al-Masri takes his place as leader of AQI. October 2006 – Masri announces the creation of Islamic State of Iraq (ISI), and establishes Abu Omar al-Baghdadi as its leader.April 2010 – Abu Bakr al-Baghdadi becomes leader of ISI after Abu Omar al-Baghdadi and Masri are killed in a joint US-Iraqi operation.April 2013 – ISI declares its absorption of an al Qaeda-backed militant group in Syria, Jabhat al-Nusra, also known as the al-Nusra Front. Baghdadi says that his group will now be known as Islamic State in Iraq and the Levant (ISIL or ISIS). January 2014 – ISIS takes control of Falluja.February 3, 2014 – Al Qaeda renounces ties to ISIS after months of infighting between al-Nusra Front and ISIS.May 2014 – ISIS kidnaps more than 140 Kurdish schoolboys in Syria, forcing them to take lessons in radical Islamic theology, according to London-based monitoring group Syrian Observatory for Human Rights. June 9-11, 2014 – ISIS takes control of Mosul and Tikrit. June 20, 2014 – The UN announces that more than one million Iraqis have been displaced.June 21, 2014 – ISIS takes control of Al-Qaim, a town on the border with Syria, as well as three other Iraqi towns.June 28, 2014 – Iraqi Kurdistan restricts border crossings into the region for refugees.June 29, 2014 – ISIS announces the creation of a caliphate (Islamic state) that erases all state borders, making Baghdadi the self-declared authority over the world’s estimated 1.5 billion Muslims. The group also announces a name change to the Islamic State (IS).June 30, 2014 – The Pentagon announces the United States is sending an additional 300 troops to Iraq, bringing the total US forces in Iraq to nearly 800. Troops and military advisers are sent to Iraq to support Iraqi security forces and help protect the US Embassy and the airport in Baghdad. July 2014 – ISIS takes control of Syria’s largest oilfield and seizes a gas field in the Homs Province, storming the facility and killing dozens of workers. Militants conquer a 90-mile stretch of Syrian towns, from Deir Ezzor to the Iraq border. In Mosul, they blow up Jonah’s tomb, a holy site dating back to the 8th century BC. August 6, 2014 – ISIS fighters attack the northern Iraqi town of Sinjar, home of a religious minority group called the Yazidis. More than 30,000 Yazidi families are stranded in the Sinjar Mountains. A Yazidi lawmaker says that 500 men have been killed, 70 children have died of thirst and women are being sold into slavery. August 8, 2014 – Two US jet fighters bomb ISIS artillery units in Iraq. US President Barack Obama authorizes “targeted airstrikes” if needed to protect US personnel and prevent potential genocide of minority groups.August 19, 2014 – ISIS posts a video showing the beheading of US journalist James Foley, missing in Syria since 2012. September 2, 2014 – ISIS releases a video showing the beheading of US journalist Steven Sotloff. The apparent executioner speaks in the same British accent as the man who purportedly killed Foley. September 11, 2014 – The CIA announces that the number of ISIS fighters may be more than three times the previous estimates. September 13, 2014 – ISIS posts a video showing the apparent execution of British aid worker David Haines.September 23, 2014 – The United States carries out airstrikes against ISIS. October 3, 2014 – ISIS releases a video showing the apparent beheading of British hostage, Alan Henning. November 3, 2014 – The Iraqi government announces ISIS militants have killed 322 members of a Sunni tribe in a series of executions. November 14, 2014 – The UN Independent International Commission of Inquiry on Syria concludes that ISIS has committed war crimes and crimes against humanity.November 16, 2014 – ISIS posts a video that appears to show a dead American hostage, Peter Kassig. January 22, 2015 – US diplomatic officials say that coalition airstrikes have killed an estimated 6,000 ISIS fighters.January 24, 2015 – A photo and audio released by ISIS appear to show the beheaded body of Japanese hostage, Haruna Yukawa. January 31, 2015 – ISIS releases a video that appears to show the decapitated body of a second Japanese hostage, Kenji Goto.February 3, 2015 – Video and still images posted by ISIS apparently shows Jordanian pilot Moath al-Kasasbeh being burned alive while locked in a cage. February 5, 2015 – Jordanian fighter jets carry out airstrikes over Syria, reportedly hitting ISIS training centers as well as arms and ammunition depots in Raqqa. The next day, ISIS claims that the airstrikes killed American hostage Kayla Jean Mueller. ISIS posts a picture of a collapsed building and the terror group claims Mueller is buried in the rubble. February 10, 2015 – Mueller’s family announces she is dead, after receiving confirmation from ISIS, including a photo of her wrapped in a burial shroud. February 11, 2015 – Obama asks the US Congress to formally authorize use of military force against ISIS. February 15, 2015 – ISIS posts a video in which militants appear to behead more than a dozen Egyptian Christians on a Libyan beach. The next day, Egyptian warplanes strike ISIS targets in Libya.February 22, 2015 – ISIS releases a video that appears to show at least 21 Kurdish Peshmerga fighters in cages carried down Iraqi streets. February 26, 2015 – Jihadi John, the disguised man with a British accent who appeared in ISIS videos as the executioner of Western hostages, is identified as Mohammed Emwazi, a Kuwaiti-born Londoner. On the same day, ISIS releases a video of its fighters destroying antiquities at the Mosul Museum.March 2015 – ISIS posts images of a man being thrown off a building in Raqqa, Syria. He had been accused of being gay. There are at least a half dozen documented cases of ISIS killing men accused of being gay.March 1, 2015 – ISIS releases 19 Christian prisoners. All but one are reportedly from a group of 220 Assyrians captured in northern Syria. March 7, 2015 – In an audio message purportedly from Boko Haram leader Abubakar Shekau, the Nigeria-based radical Islamic group pledges allegiance to ISIS. Days later, an ISIS spokesman claims the caliphate has expanded to western Africa.March 12, 2015 – Iraqi forces retake most of Tikrit. In western Iraq, ISIS blows up the Iraqi army headquarters north of Ramadi, killing at least 40 Iraqi soldiers.April 1, 2015 – Iraqi forces, aided by Shiite militiamen, take full control of Tikrit.April 8, 2015 – According to Iraqi Kurdistan officials, ISIS releases more than 200 Yazidi women and children, as well as the ill or elderly.April 19, 2015 – ISIS releases a video that appears to show militants beheading two groups of prisoners in Libya. The Ethiopian government confirms that 30 of the victims were Ethiopian citizens.May 16, 2015 – A key ISIS leader is killed during a US Special Operations raid in Syria, according to US officials. His wife is captured and the raid yields significant intelligence on ISIS’s structure and communications. May 17, 2015 – ISIS seizes control of Ramadi, the largest city in western Iraq, after government security forces pull out of a military base.May 21, 2015 – ISIS takes control of Palmyra, an ancient Syrian city that is a UNESCO World Heritage Site. According to the Syrian Observatory for Human Rights, it was the last Syria-Iraq border crossing under control of Syrian troops.June 14, 2015 – A British teen, Talha Asmal, is reportedly one of four ISIS suicide bombers who attack the headquarters of a Shia militia group in Iraq, killing at least 11. Before the bombing, ISIS posted photos of Asmal, 17, posing next to their black flag on social media. According to the BBC, Asmal left England in March to join the Islamic fundamentalists.June 19, 2015 – The US State Department issues its annual terrorism report, declaring that ISIS is becoming a greater threat than al Qaeda. The frequency and savagery of ISIS attacks are alarming, according to the report.June 24, 2015 – The Syrian government reports that ISIS militants have destroyed two Muslim holy sites in Palmyra. The group attacked a 500-year-old shrine and a tomb where a descendent of the Prophet Mohammed’s cousin was reportedly buried.June 26, 2015 – A gunman kills at least 38 people at a beachfront Tunisian hotel and a bomb kills at least 27 people at a mosque in Kuwait. ISIS claims responsibility for the attacks. July 1, 2015 – ISIS launches simultaneous attacks on five Egyptian military checkpoints, reportedly killing 17 Egyptian soldiers and injuring 30 others. According to the Egyptian military, 100 terrorists are killed in the fighting. July 4, 2015 – The Syrian Observatory for Human Rights reports it has received a video showing ISIS militants executing 25 captives in Palmyra.July 17, 2015 – As Iraqis in Khan Bani Saad celebrate Eid al-Fitr, a holiday marking the end of the fast for Ramadan, ISIS detonates an ice truck bomb in a crowded marketplace, killing at least 120 people and wounding at least 140 more.August 2015 – ISIS destroys the nearly 2,000-year-old Baalshamin temple in Palmyra. UNESCO, the UN’s cultural organization, calls the destruction of the temple a “war crime.” October 30, 2015 – The Obama administration announces that it is deploying US Special Operations forces to join the fight against ISIS in northern Syria. Fewer than 50 troops are going to Syria, according to the White House. Over the next 14 months, an additional 450 American troops are sent to Syria to help train the local groups battling ISIS. November 12, 2015 – The Pentagon announces that it has conducted a remote control drone strike targeting Emwazi, also known as “Jihadi John.” ISIS later confirms the death of Emwazi.November 12, 2015 – Two suicide bombs hit the Bourj al-Barajneh district of southern Beirut, killing more than 40 people and wounding hundreds. ISIS claims responsibility for the attack.November 13, 2015 – Kurdish forces liberate the Iraqi town of Sinjar from ISIS after two days of fighting. The Kurds were backed by coalition air power.November 13, 2015 – Three teams of gun-wielding ISIS suicide bombers hit six locations around Paris, killing at least 130 people and wounding 494 others. December 10, 2015 – A spokesman for the US-led coalition confirms that ISIS Finance Minister Abu Saleh was killed in an airstrike in late November in Iraq. December 28, 2015 – Iraqi troops retake the city of Ramadi from ISIS and raise the Iraqi flag on top of the government compound in the city’s center, according to an Iraqi military spokesman.January 24, 2016 – ISIS releases a video that purports to show final messages from the Paris attackers.February 21, 2016 – Multiple attacks in Homs and southern Damascus kill at least 122 and injure scores, according to Syria’s state-run SANA news agency. ISIS claims responsibility. March 22, 2016 – Attacks on the airport and a subway station in Brussels, Belgium, kill more than 30 people and wound about 270 more. ISIS claims its “fighters” launched the attacks. March 25, 2016 – The Pentagon confirms that US forces have killed ISIS’ finance minister, Abd al-Rahman Mustafa al-Qaduli. A US official tells CNN that special operations forces intended to capture Qaduli alive but the plan was modified at the last moment.June 26, 2016 – A senior Iraqi general announces on state TV that the battle for Falluja is over, as Iraqi troops retake the final ISIS holdout in the city.June 28, 2016 – At least 44 people die and more than 230 are injured when three attackers arrive at Turkey’s Istanbul Ataturk Airport in a taxi, then open fire before blowing themselves up. US officials believe the man who directed the three attackers is Akhmed Chatayev, a terrorist from Russia’s North Caucasus region and a well-known ISIS lieutenant.July 1-2, 2016 – Attackers invade the Holey Artisan Bakery cafe in a diplomatic enclave of Dhaka, the capital of Bangladesh. Gunmen kill 20 hostages and two police officers before authorities raid the restaurant and end the nearly 11-hour standoff. ISIS claims responsibility for the attack, but Bangladeshi officials say the attack was carried out by homegrown militants. US officials focus on ISIS as the perpetrator after photos purportedly showing the inside of the cafe and dead hostages are posted on an ISIS-affiliated website.July 3, 2016 – A suicide car bomb detonates in a busy shopping district in Baghdad, killing at least 292 people and injuring another 200. It is the deadliest single attack in Iraq since 2003. ISIS claims responsibility.August 30, 2016 – According to a statement from the terror group and its Amaq news agency, ISIS spokesman Abu Muhammad al-Adnani has been killed in the area of Aleppo, Syria. Without confirming Adnani’s death, the Pentagon confirms that coalition forces conducted an airstrike in al Bab, Syria, targeting him.September 16, 2016 – Pentagon Press Secretary Peter Cook says a US air strike targeted and killed Wael Adel Salman, aka Abu Muhammad al-Furqan, ISIS’s chief spokesman. Salman was the ISIS minister of information, responsible for overseeing the production of “terrorist propaganda videos showing torture and executions,” Cook says. October 17, 2016 – Iraqi Prime Minister Haider al-Abadi makes a televised statement announcing the start of the mission to retake the key city of Mosul, the last remaining ISIS stronghold in Iraq. October 24, 2016 – Suicide bombers attack sleeping cadets at a police training academy in Pakistan, killing 61 and injuring 117. ISIS claims responsibility, releasing a photo of the three purported attackers but Pakistani military leaders say they believe a Pakistan-based group, Lashkar-e-Jhangvi carried out the attack.April 9, 2017 – ISIS claims responsibility for two deadly bombings targeting Coptic Christian churches on Palm Sunday in Egypt. At least 49 people are killed and 119 others are injured in the blasts.April 13, 2017 – The US military drops its most powerful non-nuclear bomb on an ISIS compound in Afghanistan. An Afghan official later tells CNN that 94 militants were killed in the blast. May 26-28, 2017 – More than 200 civilians are killed by ISIS militants in Mosul, according to the UN.May 26, 2017 – Buses carrying Coptic Christians in Egypt are attacked by assailants, who fatally shoot at least 29. ISIS claims responsibility. July 10, 2017 – Mosul is liberated from ISIS. October 17, 2017 – ISIS loses control of its self-declared capital, the Syrian city of Raqqa. US-backed forces fighting in Raqqa say “major military operations” have ended, though there are still pockets of resistance in the city. December 6, 2017 – The Pentagon announces that there are 5,200 American troops in Iraq and 2,000 troops in Syria. Troop levels are trending down, according to the Pentagon, as Iraqi forces and the Syrian Democratic Forces have liberated about 97% of the territory and people in the caliphate declared by ISIS. December 9, 2017 – The Iraqi military says it has “fully liberated” all of Iraq’s territory of “ISIS terrorist gangs” and retaken full control of the Iraqi-Syrian border. The campaign to defeat ISIS in Iraq took more than three years and about 25,000 coalition airstrikes. July 25, 2018 – At least 166 people are killed in a suicide bombing and other attacks in the southern Syrian province of Suwayda, the UN Office for the Coordination of Humanitarian Affairs in Syria says. ISIS claims responsibility.August 23, 2018 – ISIS releases what it says is an audio message from leader Baghdadi. In the 55-minute recording, a man admits that ISIS groups are losing and urges his followers to carry on with the fight. August 25, 2018 – The leader of ISIS in Afghanistan, Abu Sayed Orakzai and 10 other ISIS fighters are killed in an airstrike in Nangarhar province, according to provincial spokesman Attaullah Khogyani. September 6, 2018 – The US special representative to Syria, says American troops will continue their mission until there is an “enduring defeat” of ISIS in Syria. December 19, 2018 – US President Donald Trump sets the stage for a rapid withdrawal of American troops from Syria with a tweet falsely claiming that ISIS has been defeated. Although coalition forces have been successful taking back territory that was once part of the ISIS caliphate, militants continue to control a small swath of land near the Euphrates River. Estimates vary as to how many ISIS fighters are left in Syria. A Defense Department inspector general report put the number of ISIS members in Iraq and Syria as high as 30,000. January 16, 2019 – A deadly explosion kills four Americans and at least 10 other people in the Syrian city of Manbij. ISIS claims responsibility for the attack. March 23, 2019 – The Syrian Democratic Forces announces that ISIS has lost its final stronghold in Syria, bringing an end to the so-called caliphate declared in 2014.April 2019 – For the first time in five years, ISIS releases what it says is a new video message from its leader Abu Bakr al-Baghdadi. August 6, 2019 – The Pentagon issues a report saying that ISIS is “re-surging” in Syria, less than five months after Trump declared the terror group’s caliphate there had been 100% defeated. An accompanying message to the report, written by Glenn Fine, the principal deputy inspector general, notes that, “The reduction of US forces has decreased the support available for Syrian partner forces at a time when their forces need more training and equipping to respond to the ISIS resurgence.”August 21, 2019 – US Secretary of Defense Mark Esper states that ISIS is not “in a resurgent state in Syria” despite the Pentagon report. Photos: The ISIS terror threatWounded passengers are treated following a suicide bombing at the Brussels Airport on March 22, 2016. The attacks on the airport and a subway killed 32 people and wounded more than 300. ISIS claims its “fighters” launched the attacks in the Belgian capital.Hide Caption 1 of 68 Photos: The ISIS terror threatSyrians gather at the site of a double car bomb attack in the Al-Zahraa neighborhood of the Homs, Syria, on February 21, 2016. Multiple attacks in Homs and southern Damascus kill at least 122 and injure scores, according to the state-run SANA news agency. ISIS claimed responsibility.Hide Caption 2 of 68 Photos: The ISIS terror threatSyrian pro-government forces gather at the site of a deadly triple bombing Sunday, January 31, in the Damascus suburb of Sayeda Zeynab. ISIS claimed responsibility for the attack, according to a statement circulating online from supporters of the terrorist group.Hide Caption 3 of 68 Photos: The ISIS terror threatYemenis check the scene of a car bomb attack Sunday, December 6, in Aden, Yemen. Aden Gov. Jaafar Saad and six bodyguards died in the attack, for which the terror group ISIS claimed responsibility.Hide Caption 4 of 68 Photos: The ISIS terror threatInvestigators check the scene of a mosque attack Friday, November 27, in northern Bangladesh’s Bogra district. ISIS has claimed responsibility for the attack that left at least one person dead and three more wounded.Hide Caption 5 of 68 Photos: The ISIS terror threatWounded people are helped outside the Bataclan concert hall in Paris following a series of coordinated attacks in the city on Friday, November 13. The militant group ISIS claimed responsibility for the attacks, which killed at least 130 people and wounded hundreds more.Hide Caption 6 of 68 Photos: The ISIS terror threatEmergency personnel and civilians gather at the site of a twin suicide bombing in Beirut, Lebanon, on Thursday, November 12. The bombings killed at least 43 people and wounded more than 200 more. ISIS appeared to claim responsibility in a statement posted on social media.Hide Caption 7 of 68 Photos: The ISIS terror threatSmoke rises over the northern Iraqi town of Sinjar on November 12. Kurdish Iraqi fighters, backed by a U.S.-led air campaign, retook the strategic town, which ISIS militants overran last year. ISIS wants to create an Islamic state across Sunni areas of Iraq and Syria.Hide Caption 8 of 68 Photos: The ISIS terror threatSyrian government troops walk inside the Kweiras air base on Wednesday, November 11, after they broke a siege imposed by ISIS militants.Hide Caption 9 of 68 Photos: The ISIS terror threatMembers of the Egyptian military approach the wreckage of a Russian passenger plane Sunday, November 1, in Hassana, Egypt. The plane crashed the day before, killing all 224 people on board. ISIS claimed responsibility for downing the plane, but the group’s claim wasn’t immediately verified.Hide Caption 10 of 68 Photos: The ISIS terror threatAn explosion rocks Kobani, Syria, during a reported car bomb attack by ISIS militants on Tuesday, October 20.Hide Caption 11 of 68 Photos: The ISIS terror threatShiite fighters, fighting alongside Iraqi government forces, fire a rocket at ISIS militants as they advance toward the center of Baiji, Iraq, on Monday, October 19.Hide Caption 12 of 68 Photos: The ISIS terror threatSmoke rises above a damaged building in Ramadi, Iraq, following a coalition airstrike against ISIS positions on Saturday, August 15.Hide Caption 13 of 68 Photos: The ISIS terror threatIraqi men look at damage following a bomb explosion that targeted a vegetable market in Baghdad on Thursday, August 13. ISIS claimed responsibility for the attack. Hide Caption 14 of 68 Photos: The ISIS terror threatIn this image taken from social media, an ISIS fighter holds the group’s flag after the militant group overran the Syrian town of al-Qaryatayn on Thursday, August 6, the London-based Syrian Observatory for Human Rights reported. ISIS uses modern tools such as social media to promote reactionary politics and religious fundamentalism. Fighters are destroying holy sites and valuable antiquities even as their leaders propagate a return to the early days of Islam. Hide Caption 15 of 68 Photos: The ISIS terror threatAn ISIS fighter poses with spoils purportedly taken after capturing the Syrian town of al-Qaryatayn.Hide Caption 16 of 68 Photos: The ISIS terror threatSmoke rises as Iraqi security forces bomb ISIS positions in the eastern suburbs of Ramadi, Iraq, on August 6.Hide Caption 17 of 68 Photos: The ISIS terror threatBuildings reduced to piles of debris can be seen in the eastern suburbs of Ramadi on August 6.Hide Caption 18 of 68 Photos: The ISIS terror threatThe governor of the Asir region in Saudi Arabia, Prince Faisal bin Khaled bin Abdulaziz, left, visits a man who was wounded in a suicide bombing attack on a mosque in Abha, Saudi Arabia, on August 6. ISIS claimed responsibility for the explosion, which killed at least 13 people and injured nine others.Hide Caption 19 of 68 Photos: The ISIS terror threatSaudi officials and investigators check the inside of the mosque on August 6.Hide Caption 20 of 68 Photos: The ISIS terror threatMourners in Gaziantep, Turkey, grieve over a coffin Tuesday, July 21, during a funeral ceremony for the victims of a suspected ISIS suicide bomb attack. That bombing killed at least 31 people in Suruc, a Turkish town that borders Syria. Turkish authorities blamed ISIS for the attack.Hide Caption 21 of 68 Photos: The ISIS terror threatProtesters in Istanbul carry anti-ISIS banners and flags to show support for victims of the Suruc suicide blast during a demonstration on Monday, July 20.Hide Caption 22 of 68 Photos: The ISIS terror threatPeople in Ashmoun, Egypt, carry the coffin for 1st Lt. Mohammed Ashraf, who was killed when the ISIS militant group attacked Egyptian military checkpoints on Wednesday, July 1. At least 17 soldiers were reportedly killed, and 30 were injured.Hide Caption 23 of 68 Photos: The ISIS terror threatSyrians wait near the Turkish border during clashes between ISIS and Kurdish armed groups in Kobani, Syria, on Thursday, June 25. The photo was taken in Sanliurfa, Turkey. ISIS militants disguised as Kurdish security forces infiltrated Kobani on Thursday and killed “many civilians,” said a spokesman for the Kurds in Kobani.Hide Caption 24 of 68 Photos: The ISIS terror threatResidents examine a damaged mosque after an Iraqi Air Force bombing in the ISIS-seized city of Falluja, Iraq, on Sunday, May 31. At least six were killed and nine others wounded during the bombing.Hide Caption 25 of 68 Photos: The ISIS terror threatPeople search through debris after an explosion at a Shiite mosque in Qatif, Saudi Arabia, on Friday, May 22. ISIS claimed responsibility for the attack, according to tweets from ISIS supporters, which included a formal statement from ISIS detailing the operation.Hide Caption 26 of 68 Photos: The ISIS terror threatIraqi soldiers fire their weapons toward ISIS group positions in the Garma district, west of the Iraqi capital of Baghdad, on Sunday, April 26. Pro-government forces said they had recently made advances on areas held by Islamist jihadists.Hide Caption 27 of 68 Photos: The ISIS terror threatA member of Afghanistan’s security forces stands at the site where a suicide bomber on a motorbike blew himself up in front of the Kabul Bank in Jalalabad, Afghanistan, on Saturday, April 18. ISIS claimed responsibility for the attack. The explosion killed at least 33 people and injured more than 100 others, a public health spokesman said.Hide Caption 28 of 68 Photos: The ISIS terror threatIraqi counterterrorism forces patrol in Ramadi on April 18.Hide Caption 29 of 68 Photos: The ISIS terror threatThousands of Iraqis cross a bridge over the Euphrates River to Baghdad as they flee Ramadi on Friday, April 17.Hide Caption 30 of 68 Photos: The ISIS terror threatYazidis embrace after being released by ISIS south of Kirkuk, Iraq, on Wednesday, April 8. ISIS released more than 200 Yazidis, a minority group whose members were killed, captured and displaced when the Islamist terror organization overtook their towns in northern Iraq last summer, officials said.Hide Caption 31 of 68 Photos: The ISIS terror threatKurdish Peshmerga forces help Yazidis as they arrive at a medical center in Altun Kupri, Iraq, on April 8.Hide Caption 32 of 68 Photos: The ISIS terror threatA Yazidi woman mourns for the death of her husband and children by ISIS after being released south of Kirkuk on April 8. ISIS is known for killing dozens of people at a time and carrying out public executions, crucifixions and other acts. Hide Caption 33 of 68 Photos: The ISIS terror threatPeople in Tikrit inspect what used to be a palace of former President Saddam Hussein on April 3.Hide Caption 34 of 68 Photos: The ISIS terror threatOn April 1, Shiite militiamen celebrate the retaking of Tikrit, which had been under ISIS control since June. The push into Tikrit came days after U.S.-led airstrikes targeted ISIS bases around the city.Hide Caption 35 of 68 Photos: The ISIS terror threatIraqi security forces launch a rocket against ISIS positions in Tikrit on Monday, March 30.Hide Caption 36 of 68 Photos: The ISIS terror threatThe parents of 19-year-old Mohammed Musallam react at the family’s home in the East Jerusalem Jewish settlement of Neve Yaakov on Tuesday, March 10. ISIS released a video purportedly showing a young boy executing Musallam, an Israeli citizen of Palestinian descent who ISIS claimed infiltrated the group in Syria to spy for the Jewish state. Musallam’s family told CNN that he had no ties with the Mossad, Israel’s spy agency, and had, in fact, been recruited by ISIS.Hide Caption 37 of 68 Photos: The ISIS terror threatIraqi Shiite fighters cover their ears as a rocket is launched during a clash with ISIS militants in the town of Al-Alam, Iraq, on Monday, March 9.Hide Caption 38 of 68 Photos: The ISIS terror threatDisplaced Assyrian women who fled their homes due to ISIS attacks pray at a church on the outskirts of Damascus, Syria, on Sunday, March 1. ISIS militants abducted at least 220 Assyrians in Syria. Hide Caption 39 of 68 Photos: The ISIS terror threatSafi al-Kasasbeh, right, receives condolences from tribal leaders at his home village near Karak, Jordan, on Wednesday, February 4. Al-Kasasbeh’s son, Jordanian pilot Moath al-Kasasbeh, was burned alive in a video that was recently released by ISIS militants. Jordan is one of a handful of Middle Eastern nations taking part in the U.S.-led military coalition against ISIS.Hide Caption 40 of 68 Photos: The ISIS terror threatA Kurdish marksman looks over a destroyed area of Kobani on Friday, January 30, after the city had been liberated from the ISIS militant group. The Syrian city, also known as Ayn al-Arab, had been under assault by ISIS since mid-September.Hide Caption 41 of 68 Photos: The ISIS terror threatKurdish people celebrate in Suruc, Turkey, near the Turkish-Syrian border, after ISIS militants were expelled from Kobani on Tuesday, January 27.Hide Caption 42 of 68 Photos: The ISIS terror threatCollapsed buildings are seen in Kobani on January 27 after Kurdish forces took control of the town from ISIS.Hide Caption 43 of 68 Photos: The ISIS terror threatJunko Ishido, mother of Japanese journalist Kenji Goto, reacts during a news conference in Tokyo on Friday, January 23. ISIS would later kill Goto and another Japanese hostage, Haruna Yukawa.Hide Caption 44 of 68 Photos: The ISIS terror threatISIS militants are seen through a rifle’s scope during clashes with Peshmerga fighters in Mosul, Iraq, on Wednesday, January 21.Hide Caption 45 of 68 Photos: The ISIS terror threatAn elderly Yazidi man arrives in Kirkuk after being released by ISIS on Saturday, January 17. The militant group released about 200 Yazidis who were held captive for five months in Iraq. Almost all of the freed prisoners were in poor health and bore signs of abuse and neglect, Kurdish officials said.Hide Caption 46 of 68 Photos: The ISIS terror threatSmoke billows behind an ISIS sign during an Iraqi military operation to regain control of the town of Sadiyah, about 95 kilometers (60 miles) north of Baghdad, on Tuesday, November 25.Hide Caption 47 of 68 Photos: The ISIS terror threatFighters from the Free Syrian Army and the Kurdish People’s Protection Units join forces to fight ISIS in Kobani on Wednesday, November 19.Hide Caption 48 of 68 Photos: The ISIS terror threatA picture taken from Turkey shows smoke rising after ISIS militants fired mortar shells toward an area controlled by Syrian Kurdish fighters near Kobani on Monday, November 3.Hide Caption 49 of 68 Photos: The ISIS terror threatIraqi special forces search a house in Jurf al-Sakhar, Iraq, on Thursday, October 30, after retaking the area from ISIS.Hide Caption 50 of 68 Photos: The ISIS terror threatISIS militants stand near the site of an airstrike near the Turkey-Syria border on Thursday, October 23. The United States and several Arab nations have been bombing ISIS targets in Syria to take out the militant group’s ability to command, train and resupply its fighters.Hide Caption 51 of 68 Photos: The ISIS terror threatKurdish fighters walk to positions as they combat ISIS forces in Kobani on Sunday, October 19.Hide Caption 52 of 68 Photos: The ISIS terror threatHeavy smoke rises in Kobani following an airstrike by the U.S.-led coalition on October 18.Hide Caption 53 of 68 Photos: The ISIS terror threatCundi Minaz, a female Kurdish fighter, is buried in a cemetery in the southeastern Turkish town of Suruc on Tuesday, October 14. Minaz was reportedly killed during clashes with ISIS militants in nearby Kobani.Hide Caption 54 of 68 Photos: The ISIS terror threatKiymet Ergun, a Syrian Kurd, celebrates in Mursitpinar, Turkey, after an airstrike by the U.S.-led coalition in Kobani on Monday, October 13.Hide Caption 55 of 68 Photos: The ISIS terror threatAlleged ISIS militants stand next to an ISIS flag atop a hill in Kobani on Monday, October 6. Hide Caption 56 of 68 Photos: The ISIS terror threatA Kurdish Peshmerga soldier who was wounded in a battle with ISIS is wheeled to the Zakho Emergency Hospital in Duhuk, Iraq, on Tuesday, September 30.Hide Caption 57 of 68 Photos: The ISIS terror threatSyrian Kurds wait near a border crossing in Suruc as they wait to return to their homes in Kobani on Sunday, September 28.Hide Caption 58 of 68 Photos: The ISIS terror threatA elderly man is carried after crossing the Syria-Turkey border near Suruc on Saturday, September 20.Hide Caption 59 of 68 Photos: The ISIS terror threatA Kurdish Peshmerga fighter launches mortar shells toward ISIS militants in Zumar, Iraq, on Monday, September 15.Hide Caption 60 of 68 Photos: The ISIS terror threatKurdish Peshmerga fighters fire at ISIS militant positions from their position on the top of Mount Zardak, east of Mosul, Iraq, on Tuesday, September 9. Hide Caption 61 of 68 Photos: The ISIS terror threatDisplaced Iraqis receive clothes from a charity at a refugee camp near Feeshkhabour, Iraq, on Tuesday, August 19.Hide Caption 62 of 68 Photos: The ISIS terror threatAziza Hamid, a 15-year-old Iraqi girl, cries for her father while she and some other Yazidi people are flown to safety Monday, August 11, after a dramatic rescue operation at Iraq’s Mount Sinjar. A CNN crew was on the flight, which took diapers, milk, water and food to the site where as many as 70,000 people were trapped by ISIS. But only a few of them were able to fly back on the helicopter with the Iraqi Air Force and Kurdish Peshmerga fighters.Hide Caption 63 of 68 Photos: The ISIS terror threatThousands of Yazidis are escorted to safety by Kurdish Peshmerga forces and a People’s Protection Unit in Mosul on Saturday, August 9.Hide Caption 64 of 68 Photos: The ISIS terror threatThousands of Yazidi and Christian people flee Mosul on Wednesday, August 6, after the latest wave of ISIS advances.Hide Caption 65 of 68 Photos: The ISIS terror threatA Baiji oil refinery burns after an alleged ISIS attack in northern Selahaddin, Iraq, on Thursday, July 31.Hide Caption 66 of 68 Photos: The ISIS terror threatA Syrian rebel fighter lies on a stretcher at a makeshift hospital in Douma, Syria, on Wednesday, July 9. He was reportedly injured while fighting ISIS militants.Hide Caption 67 of 68 Photos: The ISIS terror threatChildren stand next to a burnt vehicle during clashes between Iraqi security forces and ISIS militants in Mosul on Tuesday, June 10.Hide Caption 68 of 68