According to the material 1, what kind of foreign policy did Britain pursue when this powerful neighbor invaded a small country?

The policy of appeasement is a policy of not resisting aggression, tolerating connivance, making concessions, colluding with others, and compromising with aggressors at the expense of other countries' interests. Before World War II, the most active promoters of this policy were Britain, France, the United States and other countries. Before 1930s, appeasement policy mainly supported the defeated Germany and Japan as a barrier to stop the Soviet Union and suppress the people's revolution. This can be seen from the Versailles system and Washington system. This is more specific in the Dawes Plan, the Young Plan and the Locarno Convention. Munich crisis pushed "appeasement" to its peak. "appeasement" has become a way to appease and support traitors.