'Strengthening shared understanding on the impact of the Arms Trade Treaty (ATT) in addressing risks of diversion in arms transfers' is a joint research initiative by the United Nations Institute for Disarmament Research (UNIDIR), Conflict Armament Research, and the Stimson Center (jointly referred to as the Consortium). Through a series of Issue Briefs and dialogue events, the objective of the initiative is to enhance knowledge and facilitate dialogue among States to strengthen shared understanding on the impact of the ATT in addressing risks of diversion in arms transfers, and to identify options and avenues for more effective policies and practices under the Treaty moving forward. The Consortium highlights challenges for preventing diversion and generates ideas to strengthen counter-diversion measures. It seeks to contribute to efforts to tackle diversion risks associated with poorly regulated arms transfers at the national, regional and multilateral levels. Our research is intended to inform the development of good policies and practices to counter diversion within the framework of the ATT and other relevant multilateral and regional instruments. The research is funded by the Governments of France and Germany.