Russia’s troops are continuing their slow war of attrition in eastern and northern Ukraine, even as the conflict enters a pivotal phase with a series of high-level meetings that are part of U.S.

Russia launched one of its biggest aerial attacks this year at Ukraine overnight, killing at least one person and injuring more than a dozen others, Ukrainian officials said. The attack, which mostly targeted western regions of the country that are far from the battlefield's front line in the east and south,