Ukraine and Russia have continued striking each other overnight, with President Volodymyr Zelensky accusing Moscow of using North Korean missiles. In Voronezh, western Russia, warehouses of the biggest online retailer Wildberries were hit by Ukraine. In a video address on Monday evening, Zelensky said "for the first time" Russia "cannot wage war without reinforcements from North Korea". Ukraine's military has said that says dozens of North Korean missiles have been fired by Russia into its territory since Moscow's full-scale invasion in February 2022. In January 2025, Western officials told the BBC that North Korean troops had suffered nearly 40% casualties in the fighting there in just three months.