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.

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.

Ukrainian forces launched a missile attack on an oil terminal in Russian-occupied Crimea overnight, the military said.