President Harry S Truman
== == The final decision was made by the US President at that time, who was Mr Truman.
The American President, Harry Truman, made the decision to drop atomic bombs on the cities of Hiroshima and Nagasaki.
The first combat use of the atomic bomb was against Hiroshima, Japan on 6 August, 1945. Three days later, on 9 August, the second (and so far last) use of a nuclear weapon in combat was made against Nagasaki, Japan.
fat man.
While the development of the atomic bomb was initiated under FDR, Harry S Truman was president when the final decision was made to drop the bomb.
The advantage of dropping the bombs on Hiroshima and Nagasaki (I assume that this is what you are referring to) was that it made the Japanese surrender and brought the war to an end very quickly, when the Japanese were determined to fight to the end.
Little boy.
United States.
The American President, Harry Truman, made the decision to drop atomic bombs on the cities of Hiroshima and Nagasaki.
never drop an atom bomb they regerted it when they saw the destruction that it made in hiroshima an d nagasaki they killed millons
Uranium 235