I think of a buffer zone as a geological area which is physically located between two antagonistic countries, and it may or may or may not be Another Country. In the case of France and Britain, it was not. It was the English Channel.
The Rhineland was a buffer zone between Germany and France.
The war began as a competition between Britain and France for control over Ohio valley region
Austria, Russia, and France vs Britain and Prussia
Annaa
If Hitler took Poland then Britain and France would declare war on him, which they did.
France and Great Britain
Thailand was seen as the "buffer zone" between France and Great Britain. Britain having India and France having south east Asia.
The Rhineland was a buffer zone between Germany and France.
It was a joint effort between Britain and France
Belgium
(It was between Great Britain and France) It promised to split the land Great Britain promised to the Arabs between Great Britain and France (It was between Great Britain and France) It promised to split the land Great Britain promised to the Arabs between Great Britain and France
Great Britain and France
France and Britain were on the same side.
both Great Britain and France
France and Great Britain
Nope - France is an entirely separate country from Great Britain.
France and Britain fought for control of the eastern part of north America.