Beck and his conspirators knew that Germany faced certain and rapid defeat if France and Britain helped Czechoslovakia in 1938. Accordingly, they contacted the British Foreign Office, informed Britain of their plot and asked for a firm British warning to deter Hitler from attacking Czechoslovakia. In September 1938, British Prime Minister Neville Chamberlain, French Prime Minister Édouard Daladier and Italian Prime Minister Benito Mussolini signed the Munich Agreement, which handed the Sudetenland from Czechoslovakia to Germany. That ended the crisis and hence Beck's efforts at a "putsch".