KYIV/SLOVIANSK, Ukraine—Ukrainian troops claimed on Thursday to have pushed forward in intense street fighting in the eastern city of Sievierodonetsk, but said their only hope to turn the tide was more artillery to offset Russia’s massive firepower. In the south, Ukraine’s defence ministry said it had captured new ground in a counter-attack in Kherson Province….

KYIV/DRUZHKIVKA, Ukraine—Ukrainian troops battled Russians street-to-street in the ruins of Sievierodonetsk on Tuesday, trying to hold onto gains from a counter-offensive that had reversed momentum in one of the bloodiest land battles of the war. The fight for the small industrial city has emerged as a pivotal battle in eastern Ukraine, with Russia focusing its…