Ukraine Seeks Full Membership in UK-Led Military Bloc
With NATO accession uncertain, Kyiv is pushing to join the Joint Expeditionary Force, a coalition that recently extended nuclear guarantees to its members.
By Fernando Rojas ·
Ukraine is positioning itself for full membership in the Joint Expeditionary Force, a military coalition led by the United Kingdom that is rapidly expanding its security role in Northern Europe. This move comes as Kyiv seeks reliable security partners outside the formal NATO framework, where full membership still requires unanimous agreement from all 32 member states.
The Joint Expeditionary Force, established in 2014, currently includes ten NATO nations: the United Kingdom, Finland, Sweden, Norway, Denmark, Iceland, Estonia, Latvia, Lithuania, and the Netherlands. In November 2025, Ukraine was granted Enhanced Partnership status, a designation previously reserved for countries inside the coalition. This status allows Ukrainian troops to participate in joint exercises and share tactical knowledge, particularly in drone operations and electronic warfare countermeasures.
The coalition is moving beyond exercises to active defense. Since January 2025, JEF has run Operation Nordic Warden from its headquarters in Northwood, UK. The operation uses artificial intelligence to monitor 22 strategic maritime areas, tracking ships linked to Russia's shadow fleet and protecting underwater communication cables. In August 2026, the group conducted LION PROTECTOR 26, a major exercise spanning the Baltic Sea, North Atlantic, and Arctic. During the BALTIC EXPRESS phase, Danish, Latvian, Swedish, and British units escorted the vessel Ark Germania to Latvia, practicing rapid troop movement to NATO's eastern flank.
A critical development occurred in October 2026, when the United Kingdom offered to extend its nuclear umbrella to JEF members. This agreement, potentially to be signed at a summit in Oslo this November, would provide an additional layer of security guarantees independent of NATO's Article 5 collective defense clause. British officials view this as a way to reinforce European defense capabilities without relying entirely on the United States.
Ukrainian President Volodymyr Zelenskyy stated in March 2026 that Ukraine is ready to become a full member of the force. Ukrainian military leaders note that JEF members regularly lose to Ukrainian units in joint training scenarios, a dynamic first observed in 2025 and continuing through 2026. A delegation representing all 32 NATO states visited Kyiv in October 2026 to study these tactics, marking the first such visit in eight years.
For Kyiv, joining JEF offers a concrete path to deeper integration with European security structures. The alliance is designed to complement NATO rather than replace it, allowing Ukraine to secure its status as a strong partner while it continues to pursue eventual NATO membership. The coalition's independent decision-making process means each nation can choose which operations to join, offering flexibility that the broader NATO structure does not currently provide.
