Zangger Committee

The Zangger Committee, formally the Nuclear Exporters Committee, is an informal consultative body of states party to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). It was established in the early 1970s following the NPT's entry into force in 1970, taking its name from its first chairman, the Swiss professor Claude Zangger. Its central purpose is to harmonize how supplier states implement Article III.2 of the NPT, which requires parties not to provide source or special fissionable material, or equipment especially designed for processing or using such material, to any non-nuclear-weapon state unless the material is subject to IAEA safeguards.

The Committee's principal output is the "Trigger List" — a list of items whose export "triggers" the requirement for IAEA safeguards in the recipient state. The list and accompanying understandings are communicated to the International Atomic Energy Agency (IAEA) and published as IAEA document INFCIRC/209, which is updated periodically as technology evolves.

The Zangger Committee operates by consensus, meets twice a year (typically in Vienna), and produces non-legally-binding "Understandings" that members commit to apply through their national export-control systems. It is distinct from, but complementary to, the Nuclear Suppliers Group (NSG), which was created in 1974 after India's "peaceful nuclear explosion" and which extends controls to dual-use items and to recipient states regardless of NPT membership. Many states belong to both bodies; the Zangger Committee remains tied specifically to NPT obligations, while the NSG is broader in scope and includes non-NPT-related supply conditions such as full-scope safeguards.

Membership has grown from the original supplier states to include most major nuclear-capable economies, including the United States, Russia, the United Kingdom, France, China (which joined in 1997), Germany, Japan, and others. The Committee has no secretariat; the chair rotates among members and circulates documentation.