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Rebooting the Entente: An Agenda for Renewed UK-France Defense Cooperation

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The Franco-British Summit on March 10th, 2023, will mark a much-needed reset in bilateral cooperation, following years of strained relations. With a recently re-elected French president and a new British Prime minister, both sides are committed to making this summit a success and re-launching a positive agenda for bilateral cooperation. The summit, the first since Sandhurst in 2018, will focus on three key topics: migration, energy, and foreign policy. Defense cooperation will also be addressed, as it remains the cornerstone of the bilateral relationship, though it may take a less prominent part than on previous occasions.

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Shutterstock/Diego Barbieri
Shutterstock/Diego Barbieri
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Several concrete topics for joint work should therefore be discussed and agreed, from strategic discussions on European security frameworks to joint operational deployments and capability projects. It is crucial to ensure that the symbolic reset of the bilateral relationship at the summit leads to a realistic yet ambitious defense roadmap, with concrete commitments and deliverables.

 

  • As the Franco-British Summit approaches, defense cooperation remains the cornerstone of the bilateral relationship.
  • As the war in Ukraine continues, it increases the rationale for resuming closer UK-France defense cooperation.
  • Lessons needs to be drawn from the Lancaster House Treaties : overly ambitious and structuring plans are less likely to succeed than pragmatic, budget-conscious and ready-to-use projects.
  • The need to prepare for high-intensity warfare opens new perspectives for capability development in all domains and for operational cooperation across the globe.

 

This Briefing is part of a joint Chatham House-IFRI research project, the "Cross-Channel Strategic Dialogue", investigating prospects for UK-France defence and security cooperation.

The project is supported by Airbus Group, BAE Systems, MBDA Missile Systems, Thales Group and Rolls-Royce Defence.

 

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979-10-373-0675-3

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Rebooting the Entente: An Agenda for Renewed UK-France Defense Cooperation

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Author(s)
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Élie TENENBAUM

Élie TENENBAUM

Intitulé du poste

Director of Ifri’s Security Studies Center

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 A soldier watching a sunset on an armored infantry fighting vehicle
Security Studies Center
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Heir to a tradition dating back to the founding of Ifri, the Security Studies Center provides public and private decision-makers as well as the general public with the keys to understanding power relations and contemporary modes of conflict as well as those to come. Through its positioning at the juncture of politics and operations, the credibility of its civil-military team and the wide distribution of its publications in French and English, the Center for Security Studies constitutes in the French landscape of think tanks a unique center of research and influence on the national and international defense debate.

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Saudi Arabia’s Nuclear Temptations. Lessons Learned from Regional Instability

Date de publication
11 September 2025
Accroche

Saudi Arabia’s integration in the international arena and regional stability, notably through reducing its dependence on fossil energies, are crucial elements for the success of the Kingdom’s Vision 2030, the Crown Prince’s top priority. However, Mohammed bin Salman’s declarations in 2018 and 2021, indicating that “if Iran develops a nuclear bomb, we will follow suit as soon as possible”, combined with the recent strikes on key Iranian nuclear facilities, do not bode well for the future of the Kingdom, the region and the non-proliferation regime at large.

Nour EID
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The Future of Air Superiority. Command of the Air in High Intensity Warfare

Date de publication
24 January 2025
Accroche

Air superiority, understood as control of the air, is a cornerstone of the Western art of warfare. It is a decisive condition, albeit not sufficient by itself, to achieve military victory, as it enables the concentration of air power toward the achievement of wider strategic objectives and protects other components from unbearable attrition levels. It is best achieved through the offensive use of air power in a joint effort to neutralize the enemy’s air power.

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Europe Uncovered?

Date de publication
09 September 2025
Accroche

As Russia continues to threaten Europe, the Trump administration is making no secret of its desire to withdraw—at least partially—from the defense of the Old
Continent in order to focus on strategic competition with China. It is thus putting pressure on its European allies to increase their investment in the military sector. The NATO Summit in The Hague in June 2025 resulted in ambitious commitments by member states to increase their defense spending.

Élie TENENBAUM Guillaume GARNIER
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How should Britain and France cooperate to realise the Northwood Declaration?

Date de publication
18 July 2025
Accroche

During his state visit to the United Kingdom (UK) last week, Emmanuel Macron, President of France, signed a joint declaration with Sir Keir Starmer, Prime Minister, on nuclear cooperation between Britain and France. The Northwood Declaration highlights that while both countries’ nuclear arsenals remain sovereign, cooperation on nuclear deterrence can ‘contribute significantly’ to the security of the North Atlantic Treaty Organisation (NATO) and the Euro-Atlantic region.

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Rebooting the Entente: An Agenda for Renewed UK-France Defense Cooperation