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Policy brief

Tried and tested: Why the CTBT must be preserved

President Trump’s recent statement about the US resumption of nuclear testing has heightened concerns over a renewed arms race and the erosion of the global norm against nuclear testing enshrined in the Comprehensive Nuclear-Test-Ban Treaty (CTBT). This new policy brief from the ELN’s Protecting the Nuclear Non-Proliferation Treaty project argues that the CTBT reinforces the NPT by bolstering the nuclear non-proliferation norm and constraining the development of new nuclear warhead types: sustaining it is a strategic imperative. States Parties to the NPT must work together to strengthen the CTBT’s credibility and relevance to international security and prioritise collective multilateral action over short-term security gains.

4 December 2025
NPTMultilateral Arms Control, Disarmament and Non-ProliferationNPT ProjectCTBTEUNATONPTNuclear SecurityNuclear WeaponsELN
Commentary

Stepping back from the brink: How the UK could help lead the world away from the nuclear precipice 

The world today stands closer to nuclear catastrophe than at any point since the end of the Cold War. Conflicts involving nuclear-armed states could all too easily escalate to a nuclear confrontation, as global arms control treaties collapse. Steve Barwick, Chair of the Nuclear Education Trust, calls for the UK, as the chair of the group of five ‘official’ nuclear weapon states in the run-up to the 2026 NPT Review Conference, to reject nuclear sharing and prioritise transparency, reinvigorate global nuclear diplomacy, adopt a no-first-use policy, and engage with the TPNW.

25 November 2025 | Steve Barwick
NPTMultilateral Arms Control, Disarmament and Non-ProliferationNPT ProjectArms ControlCTBTNATONuclear Arms ControlNuclear WeaponsUnited Kingdom
Commentary

Violations of NATO airspace: How to restore deterrence

The recent violations of Allied airspace represent an unprecedented escalation of tensions between NATO and Russia. Matus Halas writes that NATO must try to protect its airspace against unauthorised activities, but the inconsistency of approach within NATO makes deterrence harder. While different incursions must be treated differently, there needs to be consistency both over time and across member states.

22 October 2025 | Matus Halas
Russia-West relationsAir spaceDeterrenceEuropeNATORussia
Policy brief

Widening the ceasefire toolkit: The promise of geophysical monitoring in Ukraine and beyond

Any monitoring mission deployed to observe an end to the hostilities in Ukraine is likely to incorporate a range of remote-sensing technologies to support its verification activities. Drawing on insights from the Norwegian research institute NORSAR’s real-time monitoring of the 2022 Ukraine conflict, this policy brief by Ben D.E. Dando, Kjølv Egeland, and Sebastian Schutte, finds that scientific advances and a growing availability of relevant data have made ‘seismo-acoustic’ analysis a cost-effective means of complementing, backing up, and in some cases replacing other ceasefire monitoring technologies.

17 October 2025 | Kjølv Egeland, Ben Dando and Sebastian Schutte
OSCERussia-WestOSCERussia-West relationsArms ControlEmerging technologiesNATOOSCERisk ReductionRussia-West RelationsUkraineOSCE Expert Network
Commentary

A tale of two summits

Around the political NATO Summit in the Hague last week, with its limited ambition to make Donald Trump happy again, a less visible and much more productive summit occurred, writes ELN Senior Network Member Nicholas Dungan. Concentrating on what Europe needs to do to increase European deterrence, efficiency, and resilience, it produced sound thinking and actionable proposals.

1 July 2025 | Nicholas Dungan
Euro-Atlantic SecurityRussia-West relationsDefenceEUEuropeNATOSecurityUkraineUnited StatesELN