AP Success - AP US History: National Security Council Report on Communism

… Thus unwillingly our free society finds itself mortally challenged by the Soviet system. No other value system is so wholly irreconcilable with ours, so implacable in its purpose to destroy ours, so capable of turning to its own uses the most dangerous and divisive trends in our own society, no other so skillfully and powerfully evokes the elements of irrationality in human nature everywhere, and no other has the support of a great and growing center of military power.
… Practical and ideological considerations therefore both impel us to the conclusion that we have no choice but to demonstrate the superiority of the idea of freedom by its constructive application, and to attempt to change the world situation by means short of war in such a way as to frustrate the Kremlin design and hasten the decay of the Soviet system.
...Our free society, confronted by a threat to its basic values, naturally will take such action, including the use of military force, as may be required to protect those values. The integrity of our system will not be jeopardized by any measures, covert or overt, violent or non-violent, which serve the purposes of frustrating the Kremlin design, nor does the necessity for conducting ourselves so as to affirm our values in actions as well as words forbid such measures, provided only they are appropriately calculated to that end and are not so excessive or misdirected as to make us enemies of the people instead of the evil men who have enslaved them.