Ah ... memories.
I hate to say it but it would seem that the last person (on our side) with any b@lls was Harry Truman when he ordered the Atomic Bombing of Japan.
After the 2nd one - the Japanese in power got the message.
And what a bluff Harry played. We only had enough material to make three bombs. It would be a year before we could get the materials to make a 4th one. The first of the three bombs was set off in Nevada... to prove that they worked. The other two were dropped on Japan.
Harry threatened to level Japan with a flury of atomic bombs. The Japs feared we would kill every Japanese. They did not surrender after the first one.. thinking that perhaps we only had one. But after the second they threw in the towell.
As a result the Japanese assumed we had lots of Atomic Bombs. They did not know until long after they surrendered that we had already dropped all of them we had.
When Harry was a Senator he used to go to Sam Rayburns office at the end of the day to drink whiskey and play poker. Harry did it more than a few times after he became president. He rarely lost.
They could not tell when Harry was bluffing and neither could the Japanese.
"A most cruel and strange new weapon ..." - Wasn't that the Emperor's words?