Wartime American diplomacy largely was American diplomacy towards Britain and the Soviet Union. What were the two guiding principles?

Wartime American diplomacy largely was American diplomacy towards Britain and the Soviet Union. What were the two guiding principles?

There were two guiding principles behind all diplomatic activities: the first was to win the war; the second was to establish a postwar political structure in accord with American interests and to prevent the Soviet Union from over-expansion.