ESTONIA - MAY 21: UK Defence Secretary John Healey is shown a ARX unmanned ground vehicle as Allied Forces participate in Exercise Spring Storm on May 21, 2026 in near Voru, Southern Estonia. During his one-day trip to Estonia, UK Defence Secretary John Healey is meeting with his Estonian counterpart, Hanno Pevkur, before attending a briefing on Exercise Spring Storm 2026. Members of the UK Armed Forces are participating in the twentieth edition of the international exercise led by Estonian Defence Forces, which runs from May 4 to June 1. (Photo by Leon Neal/Getty Images)