Godesberg Memorandum in the context of "Ultimatum"

Appeasement, in an international context, is a diplomatic negotiation policy of making political, material, or territorial concessions to an aggressive power with intention to avoid conflict. The term is most often applied to the foreign policy between 1935 and 1939 of the British governments of Prime Ministers Ramsay MacDonald, Stanley Baldwin and most notably Neville Chamberlain towards Nazi Germany and Fascist Italy. Under British pressure, appeasement of Nazism and Fascism also played a role in French foreign policy of the period but was always much less popular there than in the United Kingdom.

In the early 1930s, appeasing concessions were widely seen as desirable because of the anti-war reaction to the trauma of World War I (1914–1918), second thoughts about the perceived vindictive treatment by some of Germany in the 1919 Treaty of Versailles, and a perception that fascism was a useful form of anti-communism. However, by the time of the Munich Agreement, which was concluded on 30 September 1938 between Germany, the United Kingdom, France, and Italy, the policy was opposed by the Labour Party and by a few Conservative dissenters such as future Prime Minister Winston Churchill, Secretary of State for War Duff Cooper, and future Prime Minister Anthony Eden. Appeasement was strongly supported by the British upper class, including royalty, big business (based in the City of London), the House of Lords, and media such as the BBC and The Times. However, it would be mistaken to say that the policy was not similarly supported amongst the working and middle classes as well, who were not enthusiastic about another war until popular opinion changed following events like Kristallnacht and Hitler’s invasion of rump Czechoslovakia on 15 March 1939, and that at the time of Munich elite endorsement rang in concordance with popular opinion.