Sources tell CNN the US military carried out a second strike on a suspected drug boat, killing survivors. Did the Pentagon cross a line with the second attack? ... A gunman is on the run after a mass shooting at a child's birthday party in California ... Talks to end the war in Ukraine shift to Moscow today. What is Vladimir Putin willing to do for peace? Getting home from the holidays turned out to be a lot harder for many travelers today due to severe winter weather ... and it won't get any easier.