Perhaps best single sentence defining Constitution was, appropriately, penned by father of document in 1792. In such charters of as Constitution, James Madison wrote, every word ... decides a question between power and liberty. He hoped being republicans, Americans would be anxious to establish efficacy of popular charters, in defending liberty against power, and power against licentiousness. Some one hundred eighty years later, while writing one of few extended analyses of relationship between Constitution and foreign policy, Louis Henkin noted in one critical area Madison's insight had been tragically neglected. No greater power existed than American, and specifically president's, ability to destroy all civilization, but books that deal with Constitution say little about American foreign relations, Henkin lamented, and those dealing with foreign policy have roundly controlling relevance of Constitution.' In truth, neglect of connection between foreign affairs and constitutional principles is relatively new. From time of Federalist, whose opening essays stressed foreign policy problems threatened new nation's liberties and security, and of 1792-1793 Hamilton-Madison debate over president's powers in global arena, through bitter imperialist versus anti-imperialist confrontations of 1898-1900, Americans argued over appropriate foreign policy while keeping Constitution closely in view, and they fought over constitutional principles with acute awareness of their effect on international affairs. By World War II, however, debate had dramatically changed. Scholars led by Edward S. Corwin repeatedly raised danger of conducting foreign policy without due regard for constitutional restraints, but Congress, courts, and, above all, executive ignored warnings. In top secret National Security Council document NSC 68 of April 1950, which became blueprint for United States policy thereafter, Truman administration argued the integrity of our system will not be