On July 16, 1945, the 'Trinity' Test effectively brought about the transformation of the ‘American Prometheus’ into the ‘Destroyer of Worlds’ along with an expedited dawn of the nuclear age as the Laws of Physics were successfully reappraised by the Homo Sapiens. However, the initial premise and the hopeful promise of the creation of a ‘Super Weapon’ to end all wars has remained more or less a chimera for humanity even after 7+ decades of its genesis. The dawn of the nuclear age; following Trinity and the subsequent atomic bombing of Hiroshima & Nagasaki; unleashed the Cold War-era with nuclear weapons effectively becoming the 'Hanging Sword of Damocles’, as famously described by JFK, with the possibility of a potential nuclear catastrophe by accident, miscalculation or madness staying as a very real possibility throughout and the extinction of Homo Sapiens from planet Earth, just a matter of seconds, which fortunately was somehow averted on multiple occasions and humanity, somehow, managed to survive. Part 1 of this multi-part book series; based on recently declassified documents by the CIA , the U.S. State Department, KGB after the end of Cold War and other international agencies; focuses on the evolution of atomic age from its genesis during World War II till 1960.