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 Politics

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 Politics