Appeasement was the policy followed by British PM Neville Chamberlain and his allies immediately before the outbreak of World War II, when they allowed Hitler to occupy Austri … a and Czechslovakia.itler was a barrier from the communism of the west and they were more scared of communism than they were of fascism 6. They did not want to repeat the horrors that was the first world war This policy failed as a method of peace keeping for a number of reasons 1.