Russian forces have pushed west of Donetsk city and in the southern Zaporizhzhia region, the Institute for the Study of War has said.

Ukraine’s military claimed it struck a major oil terminal Monday in Crimea that provides fuel for Russia’s war effort as Ukrainian President Volodymyr Zelenskyy said the war has entered a key phase. Both sides are facing the issue of how to sustain their costly war of attrition — a conflict that started with Russia’s full-scale invasion of Ukraine in February 2022 and that shows no signs of a resolution.

A Ukrainian drone strike has caused a major fire at the largest oil depot in occupied Crimea, forcing local Russian officials to declare an emergency. The Ukrainian military confirmed it struck the Feodosia facility overnight and said it was being used to produce oil products for the invading Russian army.