Poland and the United Kingdom signed a new Security and Defence Partnership Treaty on 27 May 2026. The agreement reaffirms the two NATO allies’ commitment to collective defence and outlines enhanced cooperation across foreign policy, military interoperability, and joint training. It stresses countering the Russian Federation’s threat, supporting Ukraine’s sovereignty, and strengthening sanctions and cyber‑security measures. The treaty also covers economic security, energy transition, and climate objectives, including cooperation on clean energy, nuclear safety, and supply‑chain resilience. Both sides will establish a senior‑official coordination mechanism, hold biennial prime‑ministerial consultations, and set up ministerial dialogues on specific policy areas. The document is binding under national law and can be amended or terminated by written agreement.
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For details, see https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
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