KYIV, Ukraine: Ukraine's president replaced his top general Thursday in a shake-up aimed at reigniting momentum in the deadlocked war with Russia, which is grinding into its third year as the country grapples with shortages of ammunition and personnel and struggles to maintain support from the West.

After days of speculation that change was coming, Ukrainian President Volodymyr Zelenskyy said on social media that he was thankful for the service of the outgoing Gen. Valerii Zaluzhnyi — a military leader popular with troops and the general public. 'The time for... a renewal is now,' Zelenskyy said on X.