Poland and United Kingdom sign defence treaty (defence24.com)

• Signed in London on 27 May 2026
• Focus on joint air defence missile production and cybersecurity
• Treaty complements NATO, enables faster bilateral response
• Includes migration policy and Ukraine support coordination

"Poland and the UK signed a treaty on security and defence partnership on 27 May 2026 in London. The agreement covers conventional defence cooperation, cybersecurity, joint development of air defence effectors, next-generation medium-range anti-aircraft missiles, joint exercises, and countering cyberattacks and disinformation. It is designed to reinforce NATO and enable rapid bilateral responses before a full NATO decision."