ITI (International Tracing Instrument)

Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

A UN political agreement adopted in 2005 that obliges states to mark, record, and cooperatively trace illicit small arms and light weapons.
Is the ITI legally binding?
Does the ITI cover ammunition?
How does the ITI relate to the Arms Trade Treaty?

Updated June 22, 2026

A UN political agreement adopted in 2005 that obliges states to mark, record, and cooperatively trace illicit small arms and light weapons.

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At the 2022 Biennial Meeting of States in New York, delegations reviewed national reports on ITI implementation, with several African states citing capacity gaps in marking machinery and serial-number databases.

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The International Tracing Instrument, formally the International Instrument to Enable States to Identify and Trace, in a Timely and Reliable Manner, Illicit Small Arms and Light Weapons, was adopted by the UN General Assembly on 8 December 2005 (resolution 60/81). It is the operational tracing companion to the 2001 UN Programme of Action on Small Arms and Light Weapons (PoA).

The ITI is politically binding rather than a legal treaty: states agreed by consensus to common standards but did not sign a convention. Its core obligations cover three areas:

Marking: each small arm or light weapon manufactured after entry into force should carry a unique marking identifying the manufacturer, country of manufacture, and serial number, applied at production and at the point of import.
Record-keeping: manufacturing records should be kept for at least 30 years, and other records (import, export, transfer) for at least 20 years.
Cooperation in tracing: states commit to respond to tracing requests from other states regarding weapons recovered in conflict, crime, or illicit trafficking contexts, typically via designated national points of contact.

Implementation is reviewed alongside the PoA through Biennial Meetings of States (BMS) and Review Conferences held at UN Headquarters in New York. The UN Office for Disarmament Affairs (UNODA) supports reporting, and INTERPOL's iARMS database is frequently used as a practical tracing channel.

The ITI is often discussed in tandem with the Arms Trade Treaty (ATT) of 2013, which is legally binding and covers a wider category of conventional arms, and with regional instruments such as the ECOWAS Convention on SALW and the Nairobi Protocol. Critics note that the ITI excludes ammunition from its scope — a recurring point of contention at review meetings — and that compliance with marking and record-keeping varies widely across states.

Frequently asked questions

Is the ITI legally binding?

No. It is a politically binding instrument adopted by consensus in the UN General Assembly; states commit to its standards but face no treaty-based enforcement.

Does the ITI cover ammunition?

No. Ammunition is excluded from the ITI's scope, which remains a point of debate at PoA review conferences.

How does the ITI relate to the Arms Trade Treaty?

They are complementary: the ATT (2013) regulates international transfers of conventional arms and is legally binding, while the ITI focuses specifically on marking, record-keeping, and tracing of illicit small arms.