The principles and conceptual framework of the United Nations were formulated incrementally through a series of conferences by the Allied nations during the Second World War. The Declaration of St James's Palace, issued in London on 12 June 1941, was the first joint statement of the goals and principles of the Allies, and the first to express a vision for a postwar world order. The Declaration called for the "willing cooperation of free peoples" so that "all may enjoy economic and social security".