Rewording this ?

the truman doctrine committed the united states to the containment of communism wherever it threatened to spread. the policy of containment led the united states to support noncommunist governments in many parts of the world.

also this too:

on march 12, 1947, president harry truman urges a joint session of congress to support his doctrine, which calls for u. s. financial and military aid to greece and turkey in an effort to protect the countries from soviet domination.