Still, Obama will travel to Prague to sign the treaty with Medvedev, and then Medvedev will be coming to Washington three days later (along with some 40-plus other foreign leaders) for a Nuclear Security Summit hosted by Obama. Come to think of it, couldn't the two leaders have signed the agreement while Medvedev is in Washington, say on the morning of April 11, instead of having Obama schlep all the way to Prague? Of course, that would deprive the administration of its interest in marking the one-year anniversary of Obama's speech in Prague in which he put forward his fanciful, some would say naïve if not even dangerous, notion of a world without nuclear weapons.