(251025) -- LONDON, Oct. 25, 2025 (Xinhua) -- British Prime Minister Keir Starmer (C, front), Ukrainian President Volodymyr Zelensky (R, front), Danish Prime Minister Mette Frederiksen (L, front), NATO Secretary General Mark Rutte (R, back), and Dutch Prime Minister Dick Schoof are pictured prior to a "Coalition of the Willing" meeting in London, Britain, Oct. 24, 2025. European leaders and NATO's chief vowed Friday to step up sanctions on Russia and accelerate the delivery of long-range strike and air defense weapons to Ukraine following a "Coalition of the Willing" meeting in London. (Simon Dawson/No. 10 Downing Street/Handout via Xinhua) FOR EDITORIAL USE ONLY