Harry Truman actually said...

I think we have really passed a milestone in history today.

There are those who claim that this treaty is an aggressive act on the part of the nations which ring the North Atlantic.

The pact will be a positive, not a negative, influence for peace, and its influence will be felt not only in the area it specifically covers...

In taking steps to prevent aggression against our own peoples, we have no purpose of aggression against other peoples.