How did President Truman justify the use of the atom bomb?

Answer 1

In the Battle of Okinawa, the Japanese solders fought and died for a hopeless cause until they completely ran out of ammunition. Harry Truman realized the Japanese would not surrender as long as they had one bullet. He decided a lot fewer lives would be lost, both American and Japanese, with the atom bomb than with an invasion of Japan.

Answer 2

The Japanese were very reluctant to surrender. A single previous bombing using conventional bombs had killed about half what the atomic bomb had approximately, yet that had not deterred Japan in the slightest. Of the few options presented, the atomic bomb actually resulted in minimal deaths, and a quick and clear message to the Japanese of the power that the US held.

Answer 3

World War 2 have caused the most death toll of all of the wars and Truman stated that this weapon could end the war sooner with less dead service members.