On August 12, 1941, US President Roosevelt and British Prime Minister Churchill signed the Atlantic Charter. On August 12, 1941, US President Roosevelt and British Prime Minister Churchill signed the Atlantic Charter and British Prime Minister Churchill signed the Atlantic Charter on August 14, 1941, with the main contents of the "Prince of Wales Charter" on August 12, 1941, the United States President Roosevelt and British Prime Minister Churchill signed the Atlantic Charter on August 12, 1941, the United States President Roosevelt and the British Prime Minister Churchill signed the Atlantic Charter on August 12, 1941, the United States President Roosevelt and the British Prime Minister Churchill signed the Atlantic Charter on August 12, 1941, the United States signed the Atlantic Charter on August 12, 1941, the United States signed the Atlantic Charter on August 14, 1941, the