A series of long-range Ukrainian attacks hit targets deep inside Russia, part of Kyiv's efforts to raise the costs of the war for the Kremlin by striking energy facilities and military industries. President Volodymyr Zelenskyy said Ukrainian forces struck several military and energy infrastructure sites on Wednesday, including a military factory in the city of Cheboksary, that he said supplied components for Russian drones and missiles. Zelenskyy also said a refinery in Russia's Samara region and two oil infrastructure facilities in the Vladimir region had been targeted. The increasingly deep and audacious Ukrainian strikes have cast a challenge to Russia's President Vladimir Putin, defying his claim that Moscow was winning the war now in its fifth year.