Defense: The administration proudly reveals a state secret to our enemies before a U.N. conference on nuclear nonproliferation. It wants to lead by example on disarmament, but Iran and North Korea aren't following. Not since the 1928 Kellogg-Briand Pact that sought to outlaw war as an instrument of national policy has there been such a stunning display of dangerous naivete. Secretary of State Hillary Clinton disclosed U.S. nuclear secrets to the U.N. conference while proudly proclaiming it showed America is sending "a clear, unmistakable signal" that this nation is committed to nuclear disarmament. Kellogg-Briand laid the groundwork for Munich in...