Trade & Technology
Conventional Defense Program

Arms Trade Treaty

Supporting effective implementation of the Arms Trade Treaty

In Conventional Arms Research

The Arms Trade Treaty project helps States identify the requirements necessary to effectively implement the Arms Trade Treaty (ATT) – the first global, legally binding treaty to regulate international arms transfers. The project aims to assist States in understanding their ATT obligations, promote effective treaty implementation, and ensure comprehensive and robust ATT reporting with toolkits and analytical resources. Stimson has developed a ratification checklist, the ATT-BAP Baseline Assessment Survey, the ATT-BAP online portal and country profiles on treaty implementation, guidance and trainings for completing the initial and annual reports a dataset on States’ national transfer controls, and a significant body of analytical research.

Project Team
Elias Yousif
Research
Natalie Bramlett
Research
Rachel Stohl
Project director
In Focus
Arms Trade Treaty Baseline Assessment Project (ATT-BAP)
Supporting effective implementation of the Arms Trade Treaty.
ATT at 10
Reflecting on the Arms Trade Treaty’s first ten years and looking towards effective implementation in its second decade
The Role of Industry in Responsible International Transfers of Conventional Arms
Enhancing knowledge, facilitating dialogue, and supporting the ATT CSP9 priority theme
Strengthening Shared Understanding on the Impact of the Arms Trade Treaty in Addressing Risks of Diversion in Arms Transfers
Enhancing knowledge, facilitating dialogue, and identifying options and avenues for more effective policies and practices to address diversion risks under the ATT
Taking Stock of the Arms Trade Treaty
Examining trends, challenges, and opportunities to strengthen implementation of the ATT, with a focus on transparency and reporting

Latest

Report
Ten Years of ATT Reporting: Placing the 2024 Reports in Context
Analysis of Arms Trade Treaty (ATT) annual reports covering weapons imports and exports during the 2024 calendar year
Rachel Stohl • Natalie Bramlett
Report
The Arms Trade Treaty: Preventing Diversion Through End-Use and End-User Controls
Enhancing knowledge on the role of end-use and end-user controls in the context of the Arms Trade Treaty (ATT)
Paula Soumaya Domit • Rachel Stohl • Natalie Bramlett...
Issue Brief
Developing Evaluative Metrics for ATT Reporting
Developing metrics to evaluate the status of reporting under the Arms Trade Treaty (ATT)
Rachel Stohl
Report
Understanding ATT Reporting Challenges: Guidance and Recommendations to Strengthen ATT Reporting
Understanding challenges and developing solutions to support Arms Trade Treaty (ATT) reporting obligations
Rachel Stohl • Natalie Bramlett
Report
The Arms Trade Treaty: Regulating Brokering to Reduce the Risk of Diversion
Enhancing knowledge on arms brokering in the context of the Arms Trade Treaty (ATT)
Hardy Giezendanner • Anna Mensah Sackey • Ishtiaq Khan...
Commentary
Biden’s Missed Opportunity on the Arms Trade Treaty
For four years, the Biden administration has missed an opportunity to reestablish its leadership and credibility over the international arms trade by rejoining the Arms Trade Treaty
Rachel Stohl
Commentary
Reflections on the Arms Trade Treaty at 10
Ten years after the Arms Trade Treaty’s entry into force, we have an opportunity to look back at the treaty’s successes and ensure its success and relevance in the future
Rachel Stohl
Report
Annual Reports 2023: Positive Trends and Enduring Challenges in ATT Reporting
Analysis of Arms Trade Treaty (ATT) annual reports covering weapons imports and exports during the 2023 calendar year
Natalie Bramlett • Rachel Stohl
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News & Commentary

Commentary
Biden’s Missed Opportunity on the Arms Trade Treaty
For four years, the Biden administration has missed an opportunity to reestablish its leadership and credibility over the international arms trade by rejoining the Arms Trade Treaty
Rachel Stohl
Commentary
Reflections on the Arms Trade Treaty at 10
Ten years after the Arms Trade Treaty’s entry into force, we have an opportunity to look back at the treaty’s successes and ensure its success and relevance in the future
Rachel Stohl
Commentary
Views on the Arms Trade Treaty
Expressing the importance of strengthening the relationship between the Arms Trade Treaty and the challenges of the “real world."
Hector Guerra
Commentary
Looking at the ATT at 10
The balancing act of depicting the Arms Trade Treaty’s successes and challenges.
Guy Pollard
Commentary
An ATT at 10 Reflection
Contemplating the accomplishments of Arms Trade Treaty negotiations and the challenges of implementation from the final President of the ATT negotiations.
H.E. Ambassador Peter Woolcott
Commentary
The ATT at 10
A look behind the scenes of originating Arms Trade Treaty negotiations from the first President of the ATT negotiations.
H.E. Ambassador Roberto García Moritán
Commentary
A Brief Reflection on the Arms Trade Treaty
Reflecting on the Arms Trade Treaty's creation and calling for hope in the face of global conflict.
Tomoaki Ishigaki
Commentary
Beyond the Conference Room: The Real Impact of the Arms Trade Treaty
Finding the true dynamism and impact of the Arms Trade Treaty... outside of official ATT forums.
Anna Macdonald
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Events

  • Past
  • Event
Ten Years of Arms Trade Treaty Transparency
  • November 13, 2025
  • Past
  • Event
The Arms Trade Treaty at 10
  • December 10, 2024
  • Past
  • Event
Assessing Global Arms Trade Transparency
  • October 30, 2024
  • Past
  • Event
Arms Trade Treaty Reporting in the Shadow of Ukraine
  • November 1, 2023
  • Past
  • Event
What’s Next for Arms Trade Transparency?
  • October 26, 2022
  • Past
  • Event
Next Steps on Post-Delivery Controls for International Arms Transfers
  • September 7, 2022
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