It's March 1, 2010, and you're the secretary of Defense. Sanctions, negotiations and all other forms of diplomacy have failed to get Iran to renounce its nuclear program. The president has directed you and the chairman of the joint chiefs to draw up a plan for striking at Qum and Iran's many other nuclear facilities within the next 90 days. How would you advise that they be taken out, and in such a way that they can't come back online, at least not for several years? What would such a strike look like? Bunker busters? Cyber attacks? Cruise missiles and fighter bombers? Would we keep Israel out of it? How much air-, sea- and manpower would we need in place to keep the entire region from exploding? And how would we prepare for the aftermath?
Or would you advise against the mission entirely and resign in protest rather than execute it -- perhaps telling the president that such a strike would likely fail, be counterproductive to other U.S. goals in the region, and push the Iranians into a faster nuclear arms race?