The Royal United Services Institute for Defence and Security Studies (RUSI) is a British independent research institute and think tank renowned for its work on international defence and security. Founded in 1831 by the Duke of Wellington, it is the world's oldest such institution. RUSI provides critical analysis, facilitates debate, and influences policy-making through its extensive research, publications, events, and expert commentary. It aims to foster a more secure and stable world by promoting understanding of complex defence and security challenges.
Serves as the central hub for RUSI's research programmes, policy analysis, event hosting, publications, library services, and administrative operations.
The Grade II* listed building features the historic Duke of Wellington's Library, a renowned collection of books and archives on military history and defence. It also includes conference facilities and event spaces.
Intellectually rigorous, collaborative, and mission-driven. The environment fosters in-depth research, critical analysis, and engagement with high-level policymakers, military personnel, academics, and industry leaders.
Its Whitehall location provides unparalleled access and proximity to UK government departments (including the Ministry of Defence and Foreign, Commonwealth & Development Office), Parliament, and numerous embassies, facilitating direct engagement and influence.
RUSI supports global security understanding through its international offices in Brussels, Nairobi, and Tokyo, and strong engagement in Washington D.C. It conducts research with a global scope, covering regions such as Europe, Asia-Pacific, the Middle East, Africa, and the Americas. Functions include international research collaborations, providing expertise to foreign governments and international bodies like the UN and NATO, and hosting globally-focused events and conferences.
61 Whitehall
London
N/A
United Kingdom
Address: RUSI Europe, Rue de la Science 14b, 1040 Brussels, Belgium
To provide analysis and foster dialogue on European security challenges, inform EU and NATO policy debates, and strengthen RUSI's research impact within Europe.
Address: RUSI Kenya, The Atrium, 4th Floor, Chaka Road, Nairobi, Kenya
To conduct field-based research, engage with regional stakeholders, and contribute to policy solutions for pressing security challenges in Eastern Africa.
Address: RUSI Japan, International House of Japan, 5-11-16 Roppongi, Minato-ku, Tokyo 106-0032, Japan
To strengthen UK-Japan defence and security cooperation, provide analysis on Indo-Pacific security dynamics, and engage with Japanese policymakers and experts.
Address: RUSI US, (often operates via partnerships and visiting fellowships rather than a permanent standalone office with a public address; engagement facilitated through local partners and events)
To foster dialogue and understanding between the US and UK/Europe on critical security issues and to provide insights into US strategic thinking for a global audience.
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As of April 2025, Royal United Services Institute' leadership includes:
Royal United Services Institute has been backed by several prominent investors over the years, including:
RUSI maintains a relatively stable senior leadership team. Information on specific executive hires or exits at the highest levels (Director-General, Deputy) is not frequently publicized unless part of a major organizational announcement. Most changes involve research leadership or fellowship appointments.
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The Royal United Services Institute commonly uses the email format of the first initial followed by the last name. Other formats might exist but this is the most prevalent for professional communication.
[firstinitial][lastname]@rusi.org
Format
kvonhippel@rusi.org
Example
90%
Success rate
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