On September 30th, 1938, British and French prime ministers Neville Chamberlain and Edouard Daladier signed the Munich Pact with Nazi leader Adolf Hitler. The agreement temporarily averted the outbreak of war but gave Czechoslovakia away to German conquest. In one fell swoop, the people of Czechoslovakia were betrayed while the world leaders followed what would be a failed policy of appeasement. While Daladier abhorred the agreement, Chamberlain celebrated it. However, he was eventually required to declare war against Hitler when Germany invaded Poland. After eight months of ineffectual war time leadership, he was replaced as prime minister by Winston Churchill.