Yes, BUT......Ike knew of Japans plans to surrender...your father did not.This was not common knowledge. IKe's quotes are the direct opposite of what you are saying. IKE was known to be in line for the presidency and had all knowledge of anything to do with Japan. Being the allied leader in Europe, his intelligence was as good as what Truman had. Maybe better because he had connections with all the branches of the Military.
The Nuking of Japan was a politcal move.....no doubt about it...it was a message to Russia to stand back.
Japan had plans to surrender,no doubt about that.
I almost married a woman from Japan. She told me that some of her family was in Hiroshima....a mostly Christian city the day of the Bombing.
She often told me that The Japanese military was hoping to stop the Emperer from broadcasting the message of surrender. They failed. Yes, some of the Japanese people were going to fight to the end, but only if the Emperer ordered them to.
The Emperer was of the mindset to stop the war....but Truman had other plans.......show the Russians that we had the bomb and was not afraid to use it.
We never married because she wanted me to move to Japan. It was too much of a change for me.
I miss that woman.
Japan would've fought at least until the 1950s (I have a Japanese war bond that pays off in 1959) and even after the first nuke, was prepared to go on fighting indefinitely.
They had more than a million in uniform on the four main islands, several hundred thousand in Korea plus a one million man army in China and SE Asia that had not surrendered and was living well off native supplies.
Ike was commander in Europe and was not fully knowledgeable of the Asian situation and had little to do with our own invasion force was being assembled at Stockton, CA. Many historians have credited various post-war statements to Ike as if he made them during the war and this is an error. Truman used the bombs to bring an end to casualties and didn't weigh the impact on our erstwhile allies.