 In the Second World War, after the atomic bombings of Hiroshima and Nagasaki, atomic scientists lobbied for the international control of atomic energy as a main function of world federalist government. Albert Einstein wrote in 1946 that technological developments had shrunk the planet, through increased economic interdependence and mutual vulnerability through weapons of mass destruction. Although his adherence to the idea of a world government to guarantee interstate peace preceded the development of nuclear weapons, Einstein’s advocacy gained momentum with the risk of nuclear annihilation: