The Royal United Services Institute (RUSI) is the world’s oldest and the UK’s leading defence and security think tank. Our mission is to inform, influence and enhance public debate to help build …

RUSI embodies nearly two centuries of forward thinking, free discussion, and careful reflection on defence, security and geopolitics. Find out more about our thought leadership and convening …

RUSI publications offer rigorous, timely and policy-relevant analysis of UK and international defence and security issues. Leading thinkers and practitioners contribute to RUSI's …

RUSI publications offer rigorous, timely and policy-relevant analysis of UK and international defence and security issues. Leading thinkers and practitioners contribute to RUSI's …

Nov 4, 2025 · Matthew Savill, of the Royal United Services Institute (RUSI), said the failure to match other countries’ spending growth risks undermining Britain’s position as a leader in …

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

Dec 21, 2025 · RUSI has followed this confrontation from the start; the collection here brings together all our contributions from different perspectives and angles and across other …

Copyright 2026 | The Royal United Services Institute for Defence and Security Studies | RUSI is registered as a charity in England and Wales - Charity number: 210639 | VAT number: …

Return to the RUSI home page See the latest publications, events and news from the Royal United Services Institute View more

Dec 19, 2025 · The Royal United Services Institute (RUSI) is the world’s oldest and the UK’s leading defence and security think tank. Our mission is to inform, influence and enhance public …