>> jeremy, thank you so much for joining. >> thank you, ronan. >> see more of brian williams' interview tonight on nbc. barack obama's presidency has been bedeviled by some of the surveillance issues, but also by foreign wars, and foreign policy dilemmas. hawks on the hill accused him of responding to the indecisiveness, in excess of caution. in a commencement speech at west point today, he set out to render a clearer obama doctrine, good you will. first, he explained his reluctance to engage. he's wrenched by putting troops in harm's way. and who wouldn't be. >> four of the service members who stood in the audience when i announced the surge of our forces in afghanistan gave their lives in that effort. a lot more were wounded. i believe america's security demanded those deployments, but