History has well proven the use of atomic weapons by the US in WWII against Japan was probably the most brilliant method of ending a most violent war with the most peaceful resolution.
Only a fool argues otherwise.
I don't know if it was brilliant or not, but:
During the time between the dropping of the Nagasaki bomb on August 9 and the actual surrender on the fifteenth, the war pursued its accustomed course: on the twelfth of August eight captured American fliers were executed (heads chopped off); the fifty-first United States submarine, Bonefish, was sunk (all aboard drowned); the destroyer Callaghan went down, the seventieth to be sunk, and the Destroyer Escort Underhill was lost.
It was necessary to finish the war asap.