Jim Baggott weaves these threads into a dramatic narrative that spans ten historic years, from the discovery of nuclear fission in 1939 to the aftermath of 'Joe-1, ' August 1949's first Soviet atomic bomb test. Why did physicists persist in developing the atomic bomb, despite the devastation that it could bring? Why, despite having a clear head start, did Hitler's physicists fail? Could the soviets have developed the bomb without spies like Klaus Fuchs or Donald Maclean? Did the allies really plot to assassinate a key member of the German bomb program? Did the physicists knowingly inspire the arms race? The First War of Physics is a grand and frightening story of scientific ambition, intrigue, and genius: a tale barely believable as fiction, which just happens to be historical fact.