conference took place on April 25, 1945. FDR died on April 12, but had chosen Republican and Democratic representatives to meet at the San Francisco War Memorial Opera House with representatives from 50 nations, fashioning a charter similar to the old League of Nations covenant. It featured a Security Council dominated by the US, Britain, USSR, France, and China (the big 5 powers), and an Assembly that could be controlled by smaller countries . The Security Council had the “primary responsibility for the maintenance of international peace and security,” and each enjoyed absolute veto power over the decisions of the other members. The UN achieved its greatest success with its humanitarian programs. The UN's permanent home was in NY city.