Hitler and Stalin signed the Nazi-Soviet Nonaggression Pact because they: 1agreed on key issues.

2sought a long-term alliance.

3received a short-term advantage.

4wanted to prevent war from breaking out in Europe.

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.