military strikes, i want to be careful. there is a legal view. i want to stay away from the legal view. let me give you my diplomatic and national security definition on that. while i don't want to speculate or hypothesize how the negotiation might go, it's my full anticipation that however that meeting goes, there will be enormous diplomatic work yet remaining. to your point we have not yet exhausted our capacity there. i think there is an awful long way to go. the president has made clear, and i agree with him, that there may come that day. there may come the day when we see an arsenal of nuclear weapons capable of striking the united states of america. the president has made clear his intention to prevent that from happening. to the extent that diplomatic tools and other tools that america has as its foreign policy power are unsuccessful, i know secretary mattis has been directed to present to the president a set of options that will achieve the president's objective. >> secretary mattis has said