At the start of the speech Churchill recounts the losses that they made and the events that led to the loss of the battle with France
Explanation:
This speech was the third speech which was given by Churchill on 18th June 1940 in the House of the Commons of the United Kingdom. He made this speech because he wanted people to realize that if they win the battle and if they last for thousand years that is the British and the Common wealth then the men will say that it was one of their finest hour.
This speech was made because Eastern Europe was controlled by the Soviet Union and regarding the Warsaw pact to establish the relationships and in the start of the speech he summarizes the loss that they encountered in the Battle of France.
I think this is thesis because it is the claim of the Declaration and it explains what the writing will be about. you might want to double check though just in case.
