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International Association of Lawyers against Nuclear Arms

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International Association of Lawyers against Nuclear Arms is an international non-governmental organization that promotes legal efforts to prohibit nuclear weapons and their use or threatened use.

Last updated August 25, 2026

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Overview

The International Association of Lawyers against Nuclear Arms (IALANA) is an international non-governmental organization established in 1988 to mobilize legal expertise against nuclear weapons. Its stated purpose is to build and strengthen international legal efforts aimed at prohibiting both the use and the threat of use of nuclear arms. Rather than operating as a commercial brand, IALANA functions as a membership-based advocacy and professional network whose members include individual lawyers and lawyers’ organizations. The organization is headquartered in Berlin, Germany, while its work and membership have an international scope. Its activities center on the relationship between nuclear weapons, international humanitarian law, disarmament law, and the obligations of states under international treaties and customary international law. Through legal research, public advocacy, professional cooperation, and engagement with international institutions, IALANA seeks to make legal arguments for nuclear disarmament part of mainstream policy and diplomatic debate. IALANA played a central role in the effort that led to the International Court of Justice advisory proceedings concerning the legality of the threat or use of nuclear weapons. The organization’s involvement connected lawyers and legal scholars with the broader disarmament movement and helped frame nuclear weapons as an issue subject not only to strategic and political judgment but also to established principles of international law. The resulting advisory opinion of the Court became an important reference point in continuing debates over nuclear deterrence, humanitarian consequences, and state obligations. The association also has a German section. That section was co-founded by Herta Däubler-Gmelin, a former German minister of justice. IALANA’s institutional profile includes consultative status with the United Nations Economic and Social Council, enabling it to participate within the wider ecosystem of organizations contributing expertise and advocacy to United Nations discussions. IALANA’s present identity is therefore defined by legal advocacy rather than by products or commercial services. Its principal outputs are legal analysis, policy engagement, educational work, and participation in international disarmament initiatives. The organization is associated with wider networks concerned with nuclear non-proliferation, disarmament, and the Treaty on the Prohibition of Nuclear Weapons. Peter Becker and Takeya Sasaki are identified as its current co-presidents in the available reference material.

History

IALANA was founded in 1988 as an international association bringing together lawyers and lawyers’ organizations concerned with the legal status of nuclear weapons. Its central premise is that nuclear weapons should be addressed through international law as well as through diplomacy, military policy, and arms-control negotiations. The organization’s mission is to develop and reinforce legal arguments against the use and threatened use of nuclear arms. From its base in Berlin, IALANA developed an international professional and advocacy role. Its membership structure allows both individual lawyers and organized legal groups to participate, giving the association a platform for comparative legal analysis and cross-border cooperation. Its work has focused on international humanitarian law, the United Nations system, state responsibility, disarmament obligations, and the interpretation of rules governing armed conflict. One of the organization’s most significant historical contributions was its involvement in the campaign and legal process seeking an advisory opinion from the International Court of Justice on whether the threat or use of nuclear weapons is lawful. The effort helped bring together legal professionals and civil-society actors and presented the nuclear-weapons question as a matter of adjudicable international law. The Court’s advisory proceedings subsequently became a major point of reference in debates over nuclear deterrence, humanitarian law, and nuclear disarmament. IALANA also established a German section, which was co-founded by Herta Däubler-Gmelin, later a German minister of justice. This national structure complemented the association’s international identity by connecting German legal and political advocacy with its wider network. The organization’s consultative status with the United Nations Economic and Social Council further reflects its role as a civil-society organization contributing specialist perspectives to international deliberations. In later work, IALANA remained associated with broader campaigns for nuclear non-proliferation and disarmament, including initiatives related to the Treaty on the Prohibition of Nuclear Weapons. Its activities are principally non-commercial: legal research, public education, institutional advocacy, and professional coordination. Available reference material identifies Peter Becker and Takeya Sasaki as current co-presidents. Detailed information on the association’s founding individuals, annual programs, finances, membership size, and subsequent leadership changes is not established by the supplied sources.

  • 1988

    Organization founded

    [1]

    IALANA was established as an international association of lawyers and lawyers’ organizations seeking legal measures against nuclear weapons.

  • German section co-founded

    [1]

    The German section was co-founded by Herta Däubler-Gmelin, who later served as Germany’s minister of justice.

  • Participation in International Court of Justice advisory process

    [1]

    IALANA played a central role in the effort seeking an International Court of Justice advisory ruling on the legality of the threat or use of nuclear weapons.

  • United Nations consultative status

    [1]

    The association holds consultative status with the United Nations Economic and Social Council.

Products and positioning

A specialist international legal advocacy organization focused on establishing and strengthening legal constraints on nuclear weapons, including their use and threatened use.

  • Professional advocacy · 1988

    International legal advocacy

    IALANA’s principal offering is specialist legal advocacy concerning nuclear weapons. This includes developing and communicating arguments based on international humanitarian law, disarmament law, and the obligations of states. The work is directed toward policymakers, courts, international institutions, legal professionals, and civil-society organizations rather than commercial customers.

  • Research and education · 1988

    Legal research and education

    The association supports the use of legal analysis and professional cooperation in nuclear-disarmament debates. Its research and educational role helps explain how international legal rules apply to nuclear weapons, their threatened use, and state responsibilities. Specific publications and program details are not identified in the supplied reference material.

Marketing campaigns

  • International Court of Justice nuclear-weapons legality initiative

    International

    IALANA had a central role in the legal and advocacy process that sought an advisory opinion from the International Court of Justice on the legality of the threat or use of nuclear weapons.

    Outcome. The process produced an International Court of Justice advisory opinion that became a significant legal reference in nuclear-disarmament debates.

  • Nuclear disarmament and Treaty on the Prohibition of Nuclear Weapons advocacy

    International

    IALANA is associated with wider legal and civil-society efforts supporting nuclear non-proliferation, disarmament, and the Treaty on the Prohibition of Nuclear Weapons.

Sources1 sources

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