Dewey vigorously supported American interventionin the First World War. After thedisillusionment with the Versailles Peace Treaty,Dewey came to regard his support ofAmerican Intervention with regret and to opposeAmerican ratification of it and Americanentrance into the League of Nations.Then he supported a program called the Outlawryof War which had been initiated by alawyer from Chicago, S.O. Levinson. In 1928he supported the Paris Peace Pact that condemnedwar as a means of solving internationalcontroversies and renounced it as an instrumentof national policy. He disavowed the useof military force as a sanction against a nationwhich violated the principles of internationalpeace.During the 1930s Dewey opposed any appealto sanctions and argued that no matter whathappens the United States stay out.But as the dangers of totalitarianism becameincreasingly clear, Dewey’s attitude changed.After Pearl Harbor, He concluded that theyhad to be met with force and approved theAmerican involvement in the Second WorldWar.Dewey’s attitude toward the World War suggeststhat Outlawry of War is not only thematter of international law such as the ParisPact, but the matter of human attitude, whichwe will not settle international disputes by war,but will make efforts to settle them by all pacificmeans to the utmost.