richard haass from the council on foreign relations, and author of "a world in disarray." it's unbelievable, the disturbing after math of those chemical attacks in syria last month. what's your reactionsome. >> i thought the most power line line was the living envy the dead. this is horrific, this is not just a distraction of war crimes, this is the reality of it on a scale that is the kind of thing you read about in history, but it's stunning and it's troubling that it's happening here in 2017. >> it's hard to imagine that anyone could watch these terrible images and not be moved to do something. is this the kind of thing that motivated the president to launch those retaliatory air strikes last month? was this a red line so to speak for him and for the world? >> well, it ought to have been a red line long before this president and i think the