The threat of weapons of mass destruction is still viable, and unless proper motions are made to prohibit this, global safety is still at risk. Prior arms control agreements have moved humanity within striking distance of global prohibition, yet these weapons of mass destruction remain. This enlightening work discusses original principles for a treaty banning nuclear and chem-bio weapons worldwide. Mattis argues that a proposed new nuclear treaty, replacing today’s inadequate 1968 Non-Proliferation Treaty, would demand unanimous accession by States which must be achieved before such a treaty enters into force. By asking essential questions, and offering value-creative proposals for nuclear treaty provisions, this work offers a clear path to the daylight of worldwide weapons of mass destruction prohibition.