Why bomb dropped on Nagasaki killing nearly 40,000 people...why madness

On August 6, 1945, the American bomber Enola Gaydropped a five-ton bomb over the Japanese city of Hiroshima. A blast equivalent to the power of 15,000 tons of TNT reduced four square miles of the city to ruins and immediately killed 80,000 people. Tens of thousands more died in the following weeks from wounds and radiation poisoning. Three days later, another bomb was dropped on the city of Nagasaki, killing nearly 40,000 more people. A few days later, Japan announced its surrender.By August 1945, relations between the Soviet Union and the United States had deteriorated badly. The Potsdam Conference between U.S. President Harry S. Truman, Russian leader Joseph Stalin, and Winston Churchill (before being replaced by Clement Attlee) ended just four days before the bombing of Hiroshima. The meeting was marked by recriminations and suspicion between the Americans and Soviets. Russian armies were occupying most of Eastern Europe. Truman and many of his advisers hoped that the U.S. atomic monopoly might offer diplomatic leverage with the Soviets. In this fashion, the dropping of the atomic bomb on Japan can be seen as the first shot of the Cold War. If U.S. officials truly believed that they could use their atomic monopoly for diplomatic advantage, they had little time to put their plan into action. By 1949, the Soviets had developed their own atomic bomb and the nuclear arms race began.