This book examines the law relating to the possession, threat or use of nuclear weapons. By addressing in logical sequence the law regarding sovereignty, the threat or use of force, the conduct of nuclear hostilities, neutrality, weapons law and war crimes, the book illustrates the topics that an effective national command, control and communications system for nuclear weapons must address. Guidance is given on intractable issues, such as the responsibilities of remote submarine commanders. The continuing relevance of the ICJ's Nuclear Advisory Opinion is assessed, and the prospects for the Treaty on the Prohibition of Nuclear Weapons are discussed. The book has been written in an accessible style so that it will be equally useful to lawyers and practitioners, including relevant commanders, politicians, policy staffs and academics. The objective is to state the law accurately and to explain its implications and provide practical guidance in this most sensitive area. This book is also available as open access.

Nuclear Weapons under International Law is a comprehensive treatment of nuclear weapons under key international law regimes. It critically reviews international law governing nuclear weapons with regard to the inter-state use of force, international humanitarian law, human rights law, disarmament law, and environmental law, and discusses where relevant the International Court of Justice's 1996 Advisory Opinion. Unique in its approach, it draws upon contributions from expert legal scholars and international law practitioners who have worked with conventional and non-conventional arms control and disarmament issues. As a result, this book embraces academic consideration of legal questions within the context of broader political debates about the status of nuclear weapons under international law.

The Treaty on the Prohibition of Nuclear Weapons (2017) sets out to challenge deterrence policies and military defence doctrines, taking a humanitarian approach intended to disrupt the nuclear status quo. States with nuclear weapons oppose its very existence, neither participating in its development nor adopting its final text. Civil society groups seem determined, however, to stigmatize and delegitimize nuclear weapons towards their abolition. This book analyzes how the Treaty influences the international security architecture, examining legal, institutional and diplomatic implications of the Treaty and exploring its real and potential impact for both states acceding to the Treaty and those opposing it. It concludes with practical recommendations for international lawyers and policymakers regarding non-proliferation and disarmament matters, ultimately noting that nuclear weapons threaten peace, and everyone should have the right to nuclear peace and freedom from nuclear fear.

This book addresses the issue of the legality of the use of nuclear weapons under international law. It includes forwarding remarks by Robert S. McNamara, David W. Leebron, and Kosta Tsipis. Moxley analyzes the question in light of the July 1996 advisory opinion issued by the International Court of Justice, the law as articulated by the United States, and generally recognized facts as to the characteristics and effects of nuclear weapons. He concludes that the use of nuclear weapons is per se unlawful under the rules of international law and facts recognized by the United States. Nuclear Weapons and International Law in the Post Cold War World is an unprecedented exploration of the application of the necessity, proportionality and discrimination of principles of international law to nuclear weapons.

" ""The threat or use of nuclear weapons would generally be contrary to the rules of international law applicable in armed conflict, and in particular the principles and rules of humanitarian law ... There exists an obligation to pursue in good faith and bring to a conclusion negotiations leading to nuclear disarmament in all its aspects under strict and effective international control."" - Advisory Opinion of the International Court of Justice, 8 July 1996 ""This book shows how courageous states from the developing world, working in concert with visionary lawyers, physicians and other sectors of international civil society, boldly obtained astonishing results from the highest court in the world. The World Court clearly ruled that the threat or use of nuclear weapons is illegal in almost all conceivable circumstances. The Court further underlined the unconditional obligation of the nuclear weapon states to begin and conclude negotiations on nuclear disarmament in all its aspects. It is now up to all of us to determine the follow-up, whatever the opposition. We cannot end this century without clear commitments and steps to eliminate nuclear weapons."" - Razali Ismail, Permanent Representative of Malaysia to the United Nations, President of the United Nations General Assembly, 1996-1997 ""It is not often that a judicial opinion on a given question is both hailed and criticized by participants on all sides of the question. This book, written by a leading member of the team that helped to prepare the case on the illegality of the threat and use of nuclear weapons, explains succinctly what the World Court, and the judges in their separate statements, did and did not say. In so doing, it makes a compelling case for the proposition that the Opinion represents a milestone on the road to nuclear abolition."" - Peter Weiss, Co-President, International Association of Lawyers Against Nuclear Arms The 20th century has been defined in large part by the unleashing of the terrible destructive power of the atom, and the subsequent struggle to overcome the threat of nuclear annihilation. If humankind survives, the 8 July 1996 Advisory Opinion of the International Court of Justice, and the extraordinary process that led up to it, will have played an essential role. The (Il)legality of the Threat or Use of Nuclear Weapons is a concise yet thorough guide to the case. In straightforward language, it describes the history of this unprecedented initiative and summarizes and explains states' arguments to the Court, the Court's findings, and the separate statements of the judges. The author provides cogent expert analysis and, most importantly, reveals how the opinion imparts hope and points the way to the future: "" The Court has authoritatively interpreted law which states acknowledge they must follow, including humanitarian law protecting civilians from indiscriminate effects of warfare, the United Nations Charter, and the Nuclear Non-Proliferation Treaty. The implications are profound: abandonment of reliance on the threat and use of nuclear weapons as an instrument of national policy, and expeditious elimination of nuclear arsenals. The opinion can be cited as an authoritative statement of the law in any political or legal setting - including the United Nations and national courts and parliaments - in which nuclear weapon policies are challenged."" John Burroughs, an attorney for the Western States Legal Foundation in California, served as the legal coordinator for the World Court Project/International Association of Lawyers Against Nuclear Arms at the November 1995 hearings before the International Court of Justice. "

This sixth volume of the book series on Nuclear Non-Proliferation in International Law focuses on current legal challenges regarding nuclear disarmament and security. The Series on Nuclear Non-Proliferation in International Law provides scholarly research articles with critical commentaries on relevant treaty law, best practice and legal developments, thus offering an academic analysis and information on practical legal and diplomatic developments both globally and regionally. It sets a basis for further constructive discourse at both national and international levels. Jonathan L. Black-Branch is Chair of the ILA Committee on Nuclear Weapons, Non-Proliferation and Contemporary International Law and President and CEO of ISLAND - The Foundation for International Society of Law and Nuclear Disarmament. Dieter Fleck is Former Director International Agreements & Policy, Federal Ministry of Defence, Germany; Member of the Advisory Board of the Amsterdam Center for International Law (ACIL); Rapporteur of the International Law Association (ILA) Committee on Nuclear Weapons, Non-Proliferation & Contemporary International Law.