Appeasement - the policy of settling international quarrels by negotiation and compromise rather than force which has become particularly identified with British Prime Minister Neville Chamberlain - is one of the most fiercely debated issues in the history of international relations between the two world wars. Take a look at these two video clips from the classic BBC Schools programe "Why Appeasement?" for an introduction to the topic.
Part 1
Part 2
For a quick revision of the topic look at the BBC Bitesize site. John Clare has good pages on Appeasement and Who started it.
The I Love History Website has a good podcast, while the Oxford Dictionary of National Biography has a sophisticated analysis of the issue.
And here you can listen to Chamberlain himself on the Munich Crisis.
Finally, take a look at another classic video clip, this time from the World at War series and then make a comment on the Wallwisher on Appeasement.