Our Purpose

The Royal United Services Institute (RUSI) is an independent think tank engaged in cutting-edge defence and security research.


A unique institution, founded in 1831 by the Duke of Wellington, RUSI embodies nearly two centuries of forward thinking, free discussion, and careful reflection on defence and security matters. 

RUSI is a British institution but operates with an international perspective. Offices in Nairobi and Brussels reinforce our global reach. We have amassed over the years an outstanding reputation for quality and objectivity. Our heritage, location at the heart of Whitehall, together with our range of contacts both inside and outside government, but always strictly independent of it, give RUSI a unique insight and authority. 

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Mission and Values

RUSI's mission and values are underpinned by the ambition to build a more secure, equitable and stable world.

Our History

From our foundation in 1831 by the Duke of Wellington, learn about our rich heritage and how we have grown and developed over the last two centuries.

RUSI Awards and Prizes

We've been recognising influential thinkers for their contribution to the practice and understanding of defence and security since 1831.