What was the reasoning behind the use of atomic bombs on japan?

Answer 1

In response to the japanese attack on pearl harbour which cost usa hundreds of lives and ships. The 2 cities are bombed on aug 8 , 1942. Truman chose the bombs rather than risk millions of American lives in an invasion of the Japanese mainland, following the extremely high causalities on Iwo Jima and Okinawa.

Answer 2

The bombs saved American lives by ending the war sooner

The Japanese would not surrender unconditionally, prolonging the war and costing many lives.

The bombs would make the war less costly

Answer 3

The United States wanted to avoid an invasion of the Japanese Home Islands because the casualties on both sides would have been tremendous. The United States leaders thought that it would take something dramatic to change the thinking of the Japanese leaders or the Japanese Emperor. Up until this time, the Japanese were fighting to the death as they were being defeated in the Pacific.

Answer 4

the two atomic bombs were dropped on Hiroshima and Nagasaki so the U.S.A could end the war with Japan, hence ending WWII

Answer 5

President Truman stated that he needed to end the war and collapse Japan's means of making war ever again.