Viewed from the functional attitude, few aspects of international government offer more difficult problems than the constitutional process for negotiating, ratifying, executing and revising interstate agreements. Defects in the organizations for international cooperation are matched by imperfections in the internal machinery for asserting the will of states in collective undertakings. Certainly the constitutional development of the control of foreign policy has not kept pace with recent progress in international government as typified by the League of Nations and the International Labor Organization. The World War brought a more liberal control of foreign affairs in Germany and Austria. But in most countries, constitutional development in the supervision of the foreign office moves more slowly than in other fields of public law; and in all countries proposed changes in the mechanism of the regulation of international relations meets the powerful resistance of conservatism and national prejudice.