retaliation that it was done in defense of the united states and he is receiving political support. but did he have the legal authority? supposedly wasn t there for the same action by president obama in 2013. what changed? is there a line anywhemore that president cannot cross when using lethal force across the world. these are heavy questions. they matter a lot. one of the men that took an oath to answer one of those questions joins us now. senator tim kaine of virginia, a membered of the armed services and foreign relations committees. senator, good to have you. thanks, chris. i want to play for you what senator rubio just said on new day about why it was legal, not just the right thing to do. listen. it was the right move. first of all, it was legal. it was in furtherance of both enforcing an agreement that the united states and russia were a party to. it was in furtherance of the