The document makes arguments for banning nuclear reactors and weapons from all nations. It presents four key cases: 1) The humanitarian case that any use of nuclear weapons would have catastrophic consequences for human health and suffering. 2) The security case that nuclear weapons breed fear and do not enhance security, instead posing a direct threat. 3) The environmental case that a small fraction of current nuclear arsenals could destroy all complex life on Earth. 4) The economic case that nations spend exorbitant sums on nuclear forces while funding for disarmament and human needs is minuscule by comparison.