The Four Policemen refers to a post-war council consisting of the Big Four that U.S. President Franklin D. Roosevelt proposed as a guarantor of world peace. The members of the Big Four, called the Four Powers during World War II, were the four major Allies of World War II: the United States, the United Kingdom, the Soviet Union and the Republic of China. The United Nations envisioned by Roosevelt consisted of three branches: an executive branch comprising the Big Four, an enforcement branch composed of the same four great powers acting as the Four Policemen or Four Sheriffs, and an international assembly representing the member nations of the UN.