or Pact of Paris (1928) International agreement not to use war as an instrument of national policy. It was conceived by Aristide Briand, who hoped to engage the U.S. in a system of protective alliances to guard against aggression from a resurgent Germany. The U.S. secretary of state, Frank Kellogg, proposed a general multilateral treaty, and the French agreed. Most states signed the treaty, but its lack of enforceability and exceptions to its pacifist pledges rendered it useless. See also Pact of Locarno