(CNN)Here’s what you might have missed Tuesday on CNN:
— The outcome of the Iowa Democratic caucuses remains unknown, due to issues with a new application used to report results. Follow live updates.– Republicans sidestepped questions about President Trump’s conduct on Ukraine, as senators continued giving speeches today explaining their impeachment vote. — Actress Shannen Doherty says she has stage 4 breast cancer, after announcing in 2017 that she was in remission for the disease. — A Wuhan doctor tried to warn people about the coronavirus but was silenced by authorities. Now, he speaks out from intensive care, having been infected himself.Read More– Trump is set to deliver his third official State of the Union address tonight at 9 p.m. ET. Here are four things to watch for.— The US military deployed a new submarine-launched low-yield nuclear weapon — a tool the Pentagon views as key to countering Russia.– Sephora is opening 100 new stores in its largest single-year expansion ever.– Commuters beware: An artist tricked Google Maps into creating traffic jam alerts by pulling 99 phones slowly around this capital city.