During the Potsdam Conference, President Truman was told about a successful nuclear bomb test. He told Winston Churchill about the successful test, but left Stalin out of the conversation. Truman continued use U.S.S.R’s help assistance against Japan, even though the nuclear bomb would render Russian help useless. Truman was keeping Stalin out of the loop because of their countries’ relationship. The US and Russia had an tense, but peaceful relationship. They are rivals who happened to have the same enemy. The US used the atomic bombs as a power play against the Soviets. The devastation from the nuclear weapons showed the world that the US was the most powerful country. The bombings of Hiroshima and Nagasaki may have had an ulterior motive than to end the war. They were used to keep Russia at bay, and assert US dominance. With no US lives being lost, the pros far outweigh the cons of the US using the nukes to assert dominance over Russia. These bombings were most likely a show. The US government had spent too much money on the Manhattan Project for it not to be used. They were used to claim the number one spot on the most powerful countries list. Surrender or not, the US asserted their dominance and warned Russia that they were a world superpower. The bombings of Hiroshima and Nagasaki were justified by the US stating that they were needed to make the Japanese surrender. It’s widely believed that this was the most effective way to force a surrender without costing any more American lives. There is more evidence supporting that the bombs were not needed to force a surrender, but there was an ulterior motive for using them. The US had spent time and money on these bomb, so they weren’t going to go unused. They most likely used them as a way to show the world, but specifically Russia, that they were dominant. Japan was already bleeding out through air raids and blockades. They had limited resources. Add the Soviet invasion and the threat of a US invasion to that, and the Japanese had to consider a surrender. The bombing of Nagasaki had little effect since discussions of surrender started before the bomb was dropped. The Japanese were not as influenced by the atomic bombings because they thought of them just as a larger scale fire bombing, which they were experiencing the entire war. Overall the atomic bombs used in Hiroshima and Nagasaki were not necessary to end the war, but they were used as a power play against Russia and established US dominance.