U.K. Prime Minister Keir Starmer announced a new military aid for Ukraine, as well as the provision of artillery barrels and a mobile air defense system, during his visit to Kyiv on Jan. 16.This visit marks Starmer's second trip to the Ukrainian capital and the first since becoming prime minister in July 2024. During the visit, Starmer and Ukrainian President Volodymyr Zelensky signed a 100-year partnership agreement to solidify long-term cooperation. Starmer revealed that the U.K. has already provided 3 billion pounds ($3.6 billion) in military aid to Ukraine this year and pledged an additional 2.2 billion pounds ($2.6 billion), financed by interest from frozen Russian assets.The prime minister said that separate from the new aid package, the U.K. would send Ukraine 150 artillery barrels produced by Sheffield Forgemasters, the first such barrels manufactured in the U.K.