Leading international security scholars and policy advisors from universities, think-tanks, and nuclear weapons laboratories in the United States analyze the future of nuclear weapons proliferation. In April 1995, the earlier 1970 Nuclear Non-Proliferation Treaty was renewed indefinitely and without change to the original clauses of the treaty. The authors examine the continuing relevance or irrelevance of the old treaty, the role of coercive sanctions in enforcing restraint, and the impact of biological, chemical and missile proliferation on the nuclear motives and ambitions of various states. Attention is given to proliferation conditions in the former Soviet republics, East and South Asia and the Middle East.