What options besides containment might Truman have considered in response to Soviet expansionism?

Besides containment, Truman could have considered a more aggressive military strategy, such as direct intervention in regions threatened by Soviet expansion. He might have pursued a policy of rollback, actively seeking to diminish Soviet influence in Eastern Europe through support for anti-communist movements. Additionally, increasing economic aid to allies and bolstering military alliances, like NATO, could have been an option to deter Soviet aggression and promote stability in contested regions. Lastly, diplomatic engagement aimed at arms control or a more conciliatory approach might have been explored to reduce tensions.