What do you call the early policy used by Great Britain and France when dealing with Hitler's aggressive actions?

Appeasement is the policy that was first used by the French and the British. This was to avoid conflict with Germany. However, it ended up with Nazis marching into Rhineland and even Hitler realized that had the forces taken initiative and marched into Rhineland as well, he would have been forced to retreat. This drew him to conclude the French and British were weak opponents