Had any strong leaders remained in Europe, such as a Churchill, Thatcher, DeGaulle, Adenauer, or Haakon, they would have.
The entire continent and their pitiable attempt at a United States of Europe called the EU has been gelded.
All worthy folks. But you have to remember that Churchill succeeded Chamberlain. You cannot consider the post-war DeGaulle without first considering the pre-war Daladier. Thatcher was preceded by Labourite James Challaghan.
Just because the current crop is hiding their heads, doesn't mean there's not a new crop waiting in the wings to pick up the pieces. Sarkozy in France is one.