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Phalanx of defence pacts? Mapping bilateral defence partnerships in Europe

Published: 23 October 2025
Böll EU Brief
Europe’s defence map is being redrawn. Our new Böll EU Brief tracks over 160 defence partnerships signed since 2014 among EU countries, the UK and Ukraine – most of them after Russia’s full-scale invasion of Ukraine. Bilateralism boosts trust, interoperability and procurement speed, but also risks duplication and fragmentation. To turn this patchwork into strategy, the EU and NATO should map and integrate these deals into joint planning, strengthen the European Defence Agency’s role, and use bilaterals to offset declining US support.  
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Budgeting for security?

Published: 27 May 2025
Discussion paper
The ReArm Europe/Readiness 2030 proposal has limited fiscal impact and is unable to address the persistent lack of coordination among Member States, as it does not adequately incentivise joint procurement. Instead, the authors suggest to future-proof the EU's fiscal rules and develop an EU grants-mechanism tied to strategic cooperation, greater parliamentary oversight, and a broader concept of security that includes climate and democratic resilience.
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Cable diplomacy: Securing influence, data and global rules

Published: 27 May 2025
Böll EU Brief
Subsea data cables are the digital lifelines of our modern world. Yet, external factors frequently expose vulnerabilities in the network and its supporting infrastructure. While around 150 cable faults occur globally each year, states suspect a growing number of cable faults to be linked to hybrid or malicious activity. Recognising that many states around the world face similar risks, the EU Action Plan on Cable Security proposes to establish “an advanced cable diplomacy”. But cable diplomacy is not a one-size-fits-all strategy. Technological sensitivities, dual-use aspects and geopolitical considerations demand a tailored approach. Where and how should the EU build effective cable diplomacy partnerships?
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EU defence industrial policy in a new era

Published: 13 February 2025
E-paper
The 2024 re-election of Donald Trump as US president, and the realignment of US security strategy that is expected to follow fundamentally changes Europe’s security outlook. The EU cannot become Europe’s security provider, but it can, through its defence industrial policy, support the funding and organization of the rearmament effort.
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Towards a common European China strategy? (2025 update)

Published: 30 January 2025
Study
The majority of EU Member States do not have any formal China strategy papers. Some EU Member States and specific government ministries have adopted internal China strategies and guidelines that have not been officially released to the public. Commonly referred to as ‘China strategies’, these documents outline national positions on China, rather than concrete strategies for managing bilateral relations. Jacob Mardell mapped out the state of play of these strategies in EU27, UK and Switzerland.
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Strengthening the EU's global capacity to act

Published: 7 November 2024
Policy Paper
The EU's reactions to the current challenges in the areas of security and trade policy highlight that a resolute and coherent common European foreign policy depends on the political will of Member States and their willingness to overcome their differences. The aim must be for Europeans to jointly consider their international commitment across different policy areas and act accordingly in a strategic manner. But the institutional reforms of the past have not provided the necessary push forward. In this sense, the recommendations for action in this paper are to be understood primarily as a call to Member States to make better use of the existing scope for action within the EU treaties.
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How European Transatlanticists Might Approach an Isolationist U.S. Administration

Published: 1 February 2024
Policy brief
The 2024 U.S. elections will be closely watched around the world, especially in Europe. The United States is the European Union’s most important partner, guaranteeing Europe’s security through the North Atlantic Treaty Organization (NATO). A potential shift toward a less internationalist and more isolationist U.S. foreign policy would have profound implications for the continent.

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