Polish President Karol Nawrocki signed legislation on 4 November 2026 enabling the ratification of a security and defence partnership treaty between Poland and the UK. The agreement covers cybersecurity, the protection of critical infrastructure and mutual military assistance in the event of an armed attack.
Polsat News and RMF24 reported the president’s decision, citing a statement from the Polish President’s Office. The legislation concerning the treaty was one of five laws he signed that day.
The law, dated 18 September 2026, authorises the ratification of the bilateral treaty. The treaty itself was signed in London on 27 May 2026, so the latest development concerns the legislation needed for ratification rather than the signing of a new agreement.
Cybersecurity and mutual military assistance
According to the presidential statement reported by both outlets, the treaty establishes a framework for cooperation in areas important to both countries’ security, including cybersecurity and the protection of critical infrastructure. It also contains a bilateral clause providing for mutual military assistance in the event of an armed attack.
That defence commitment is a significant element of the agreement between Warsaw and London. However, the reports do not set out the detailed conditions for activating military assistance, so they do not establish how the clause would operate in a specific situation.
Signing legislation that enables ratification does not, in itself, mean that ratification is complete or that the treaty has entered into force. The announcement confirms this stage of the process, but does not establish when the agreement’s provisions will take effect.
