Stockholm International Peace Research Institute

Stockholm International Peace Research Institute (SIPRI) is an international institute based in Stockholm, Sweden. It was founded in 1966 and provides data, analysis and recommendations for armed conflict, military expenditure and arms trade as well as disarmament and arms control. The research is based on open sources and is directed to decision-makers, researchers, media and the interested public. SIPRI's organizational purpose is to conduct scientific research in issues on conflict and cooperation of importance for international peace and security, with the goal of contributing to an understanding for the conditions for a peaceful solution of international conflicts and sustainable peace. SIPRI was ranked among the top three non-US world-wide think tanks in 2014 by the University of Pennsylvania Lauder Institute's Global Go To Think Tanks Report. In 2020, SIPRI ranked 34th amongst think tanks globally. As of August 2026, SIPRI is the most cited think tank based outside of the US and UK and eleventh-most cited think tank overall.

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