My good friends, for the second time in our history, a British Prime Minister has returned from Germany bringing peace with honour. I believe it is peace for our time. We thank you from the bottom of our hearts. Go home and get a nice quiet sleep.

https://en.m.wikipedia.org/wiki/Peace_for_our_time

We did appeasement in 2014 with the invasion of Crimea. Totally solved the problem didn't it. Just like Chamberlain prevented the meat grinder of WWII.