No countries really 'entered' the Cold war, this was not an official 'declared' war. It was so called because of the opposing ideology of the Soviet system and the democratic western countries who made up the NATO Alliance. France was part of NATO until 1966 and then left.
the us decided to enter world war because they want the resources of france, and they want to keep on ruling france.
August 3,1914
the us decided to enter world war because they want the resources of France, and they want to keep on ruling france.
03 Sept 1939
France was invaded on May 10, 1940 by the Nazis.
Devon, England
Britain and France declared war on Germany on 3 September 1939
Which war - France has been in many.
France was invaded by German troops in 1940, surrendered on 24 June 1940.
I am sorry while as a Canadian it would be nice to think of France as an incident, it was not. ;) I think the question is did France take part in the cold war and did the cold war happen in France. Generally France is a NATO country and was actively involved in Opposing the USSR and its goals during the cold war. That would mean that there were incidents in France constituting that the cold war happened partially in France.
Italy declared war on France and Britain on 10 June 1940.
When Germany invaded Poland in 1939, France and Britain, who had promised aid to Poland if Germany invaded, entered the war on the Allied side, thus starting the Second World War.