Nuclear Weapons Are A Threat to All Ever since the first nuclear weapon was built in 1945, nuclear war has been a threat. The two major nuclear powers in the world today are the Soviet Union and the United States. If a war ever broke out between the two, which involved the use of nuclear weapons, the whole world would suffer from the effects. In this report I am going to prove that nuclear weapons are a threat to all of us. A nuclear weapon is any device that causes an explosion by the release of the energy in an atom. They are much more powerful than any conventional or "non nuclear" weapons. Nuclear weapons are divided into two groups: fission weapon