Lead by example on nukes, Mr. President-elect

On nuclear weaponry, the United States must lead by example. Expect President-elect Barack Obama to call for a nuclear summit of leading nations on practical steps that all can take towards a world without nuclear weapons. Their ultimate elimination should be a core principle of his national security strategy. Look for early talks with Russia on mutual reductions to show we are serious. There are dozens of other steps to take, but cleaning out our own nuclear house would be an important early move.