The President's News Conference
04/27/1949
https://www.presidency.ucsb.edu...
The weapons of destruction have become so powerful and so terrible that we can't even think of another all-out war.
I wouldn't take any, now. It's a little late.
In this celebration let us join with the peoples of the other free nations of the world in recognition of our common pur...
It would have involved us in all-out war in the Far East, and we have been strenuously trying to avoid that all the time...