The nuclear non-proliferation treaty had recently undergone its third formal review by its signatories, who had assessed its effectiveness and considered how it might better be implemented. This book, originally published in 1987, written by experts many of whom were leading participants in the nuclear non-proliferation treaty regime at the time, examines the whole range of issues connected with nuclear non-proliferation and the treaty. It looks at non-proliferation from the point of view of nuclear nations, non-nuclear nations and the nuclear industry. It assesses the work of the international monitoring bodies and reconsiders the place of non-proliferation in the changing balance of global nuclear power. It concludes by discussing the way forward.