What was the state of relations among the Allies at Potsdam?

The alliance was strong, as the “Big Three” agreed on virtually every point.

Truman was growing increasingly suspicious of the USSR and Britain, and Stalin and Attlee were growing increasingly suspicious of the United States.

Attlee was growing increasingly suspicious of the United States and the USSR, and Stalin and Truman were growing increasingly suspicious of Britain.

Stalin was growing increasingly suspicious of the United States and Britain, and Truman and Attlee were growing increasingly suspicious of the USSR.