In December 2003 the British government announced that within a few years it would need to take decisions about the future of Britain's strategic nuclear deterrent. Exactly three years later, its plans were revealed in a White Paper. The existing Trident system is to be given a life-extension, which includes building new submarines to carry the missiles, costing £15–20 billion. Britain has a substantial nuclear legacy, having owned nuclear weapons for over half a century. The strategic context for the deterrent has changed completely with the end of the Cold War, but nuclear weapons retain much of their salience. This Adelphi Paper argues that it makes sense to remain a nuclear power in an uncertain and nuclear-armed world. Given that deterrence needs are now less acute, but more complex than in the past, the paper asserts that deterrence also needs to be aligned with non-proliferation policies, which seek to reduce the scale of threats that need to be deterred. Somewhat overlooked in current policy are appropriate measures of defence, which can raise the nuclear threshold and, if required, mitigate the effects of deterrence failure. It concludes that the government's decisions about the future form of the deterrent are very sensible, but cautions that they still need to be integrated into a broader policy that embraces diplomacy, deterrence and defence to counter the risks posed by nuclear proliferation.

In this White Paper, the Government reaffirms its commitment to maintain Britain's independent nuclear capability by investing in a new generation of ballistic missile-carrying submarines and extending the life of the Trident D5 missile. However, in order to ensure the deterrent system is the minimum necessary to provide effective deterrence, there will be a further 20 per cent reduction in operationally available warheads. The Government believes this decision balances the interests of national security against its undertaking to work towards multilateral disarmament and to counter nuclear proliferation, and it is fully compatible with Britain's international legal obligations. The White Paper discusses the policy context and sets out the reasons why decisions on the future of the UK's nuclear deterrent system are needed now, as well as considering the various options and their costs, and the industrial aspects involved in building the new submarines in the UK.

Volume I of The Official History of the UK Strategic Nuclear Deterrent provides an authoritative and in-depth examination of the British Government’s strategy towards nuclear deterrent from 1945 to 1964. This volume, written with full access to the UK documentary record, examines the strategic nuclear policy of British governments after 1945 as they tried to build and then maintain an independent, nationally controlled strategic capability, while also attempting to forge a close nuclear relationship with the United States. This book will be of much interest to students of British politics, nuclear proliferation and international relations.

The Trident nuclear-deterrent program is one of the United Kingdom's largest-ever military acquisitions. Planned and initiated during the Cold War, it is now coming to fruition at a time when the most obvious justification for it--the Soviet threat to Western Europe--has disappeared. With the money largely spent or committed, Britain's continuance as a nuclear-weapon state until well into the twenty-first century seems certain. But with what point and purpose? This report examines the history, the underlying issues, the policy options, and the risks related to redefining a rationale for Britain's nuclear-deterrence program. The author reviews the role the United States has played in the development of Britain's nuclear policy and discusses how a new rationale might affect U.S.-U.K. relationships.

This text focuses on the disagreements which existed in British political and military circles over nuclear strategy directly after World War II. Based on recently released documents, it argues that British policy in this important area was much more ambiguous than is commonly supposed.

Since 1969, the United Kingdom always has always had one submarine armed with nuclear-tipped ballistic missiles underwater, undetected, in constant communication, ready at a set notice to fire at targets anywhere in the world. This is part of its Trident Programme, which includes the development, procurement, and operation of the current generation of British nuclear weapons, as well as the means to deliver them. Operated by the Royal Navy and based at Clyde Naval Base on Scotland’s west coast, it is the most expensive and most powerful capability of the British military forces. In 2016, the United Kingdom had to decide on whether to go ahead and build the next generation of nuclear submarines that will allow the UK to remain in the nuclear business well into the second half of this century. The book presents the political, cultural, technical, and strategic aspects of Trident to provide a thoughtful overview of the UK’s complex relationship with nuclear weapons. The authors, both scholars and practitioners, bring together diverse perspectives on the issue, discussing the importance of UK nuclear history as well as the political, legal, and diplomatic aspects of UK nuclear weapons—internationally and domestically. Also addressed are the new technical, military, and strategic challenges to the UK nuclear thinking and strategy.