Atomic Bomb

In August of 1945 nuclear weapons were exploded upon the people of Hiroshima and Nagasaki in Japan. Following these atomic bombings, Japan surrendered. But were the atomic bombings necessary to save Allied lives and end Japan's threat to world peace while avoiding a deadly invasion of the Japanese mainland?
The Germans surrendered to the Americans on May 8th, 1945. President Truman wanted to end World War II in the Pacific as quickly as possible. After a hard fought war we had pushed the Japanese back to their main islands and demanded surrender. The leaders of the super powers held a summit conference at Postdam in July of 1945. They demanded an unconditional immediate su...