1) Churchill defended in his speech to the Parliament that the way to keep peace and prevent the growth of Nazi power as to guarantee the security of Czechoslovakia. He asked France and other powers along with Britain to do that. “All is over. Silent, mournful, abandoned, broken, Czechoslovakia recedes into the darkness…We are in the presence of a disaster of the first magnitude which has befallen Great Britain and France. Do not let us blind ourselves to that…”
2) In Churchill’s opinion if the Allied prevented Germany to invade Czechoslovakia after the seizure of Austria the growth of the Nazi power would be kept. Chamberlain decided not to fight against the Nazis, but make a deal with them. A deal that Hitler broke by invading Czechoslovakia by March 15th of 1939. This is the reason why Churchill criticized Chamberlain police of Appeasement by avoiding war.
3) For Churchill, the responsibility for the lost opportunities was Chamberlain that chose to make a deal with the Nazi - The Policy of Appeasement - a deal that everyone could predict they would break. He also mentions that this choice made the League of Nations seem weak before Nazi’s eye and left them without national defense and international security.