posture making sure the american troops on the ground weren t more vulnerable to iranians or russians. beefed that up. the second part is a murkier argument. that is, how do you prevent someone from using chemical weapons that violates international law? we re hearing the pentagon isn t regime change, isn t forcing assad out of power. it s sending a clear message on deterrence. if he uses chemical weapons there will be repercussions not just a message to assad but anyone in the world that would use banned weapons. and i m sure we ll continue the conversation over the next hours and days. house speaker paul ryan leaving congress. the driving force behind his decision and the battle to replace him that started before he announced his retirement today. plus, protecting special counsel. the last few minute we learned about a real step on that proposed bill to protect robert