The DPG was chosen as a research institution to assist in the deliberations of the International Commission on Nuclear Non-Proliferation and Disarmament, constituted by the Australian and Japanese governments. The support of the NTI to DPG's efforts has been immense and definitive. The first decade of 21st century has seen a resurgence of support for global nuclear disarmament. A cascade of nuclear disarmament proposal has emerged from different sources. India has consistently favored complete global nuclear disarmament, even as it laid the foundations of a nuclear energy programme. Notwithstanding the nuclear tests, Indian policy on global nuclear disarmament has not been disavowed. Global nuclear disarmament is closely linked to geo-political conditions. Unless such conditions are favourable, states are unlikely to take initiatives to either reduce or eliminate their nuclear weapons stockpiles. This book examines the geopolitical necessities which will encourage nuclear disarmament globally. It also contrasts them with the geopolitical realities currently prevailing which impact on nuclear disarmament. The papers in the book bring forth both the challenges and opportunities that lie ahead."