The decision to use atomic weapons durring second world war

On August 6 and August 9 , 1945 , the world saw the first and only usage of atomic weaponry in the history of the world . President Truman said that his decision to use the bomb was for the chief purpose of ending WWII , the deadliest war in human history , as quickly as possible Multiple warnings were given to Japan about this new weapon in the hope that they would surrender . Japan did not heed these warnings before or even after the dropping of the first bomb on the city of Hiroshima . An invasion of

Japan , which was planned for the spring of 1946 , would cost an estimated 500 ,000 American lives and in the event of such an invasion , it was learned that plans dated August 1944 , for the murder of more than 100 ,000 Allied POWs would be carried out (Goodwin , 2003 pg 338 ) However , the major scientists of the day who worked on the project as well as the chief Allied commanders in the field , believed that the use of the bomb was unnecessary as Japan was planning to surrender in the immediate future without the influence of the bomb and that further usage of atomic bombs , was not only unnecessary but immoral and constituted a war crime as it was a crime against humanity

The atomic bomb started with the Manhattan Project . This was the name given to the highly classified , top secret project in to beat the Germans to have the first atomic bomb in the history of the world . The project was initially started by refugee European scientists , most notably , Albert Einstein , who in a letter to President Roosevelt in the spring of 1939 , warned that the Germans were aggressively seeking out the use of such a bomb and that the atomic age , whether the world liked it or not , was upon us and it would behoove the United States if they were the first ones with this technology and not the Axis powers . This letter sparked what would become the largest and most costly development research project of its time . During World War II , the number of American deaths would exceed 400 ,000 . This was nothing in comparison to the more than the seventeen million deaths that were suffered by the Soviet Union America 's contentious ally . This resulted in the aggressive pursuit of the war in which any means necessary would be used in to end the war as quickly as possible and decrease the number of American deaths . It was also necessary that the Manhattan Project be kept top secret . The project was so top secret that Vice President Harry Truman did not know of its plans until he secured the White House at the death of President Roosevelt in April of 1945 . Only then did President Truman learn and then approve the further testing and continuation of the plan . The atomic bomb was World War II version of chemical warfare except that it was on a much larger scale . Therefore...