President Donald Trump expressed optimism after a high-level meeting between US officials and a Ukrainian delegation in Florida on Sunday. With Special Envoy Steve Witkoff en route to Russia, CNN's Chief Global Affairs Correspondent Matthew Chance breaks down what barriers are left to the talks. | CNN International

Sen. Mark Kelly talks to CNN's Dana Bash about whether he thinks the second US military strike on a suspected Venezuelan drug vessel constitutes a war crime and, as a former Navy captain, how he would have viewed the order when he was on active duty. | CNN

Police across Missouri are reporting numerous accidents as snow, slick roads and plunging temperatures create hazardous travel across the state. Follow live updates: https://cnn.it/4rxCtHK | CNN

The White House released a memo from President Donald Trump's doctor saying that his medical imaging in October was for his cardiovascular and abdominal systems and that both showed "perfectly normal" results. https://cnn.it/4rBuR7e | CNN International

CNN's Jim Sciutto speaks with Ukrainian MP Halyna Yanchenko about President Donald Trump sending Special Envoy Steve Witkoff and Jared Kushner to meet with Russian President Vladimir Putin to negotiate an end to the war in Ukraine. https://cnn.it/48vlAoq | CNN International