People attend a rally to demand the release of Ukrainian prisoners of war, who were taken captive in the Mariupol region of Ukraine by Russian forces, in Kyiv, Ukraine, Saturday, Feb. 24, 2024. Ukraine is marking two years since Russia's full-scale invasion with a somber mood hanging over the country. On the battlefield, Ukrainian troops are running low on ammunition as they hope for further Western aid. (AP Photo/Evgeniy Maloletka)