Remarks to Members of the U.S. National Commission for UNESCO.
09/24/1946
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.
It is an office that is without parallel in the history of the world.
You can't run the Government without it.
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...