In recent days, alongside reports of drone and missile strikes on cities, factories, and gas stations, the state of the front lines has suddenly become a major topic of discussion — apparently because Donald Trump has returned as a mediator in the negotiations. Vladimir Putin told him about the fighting in the ruins of Kostiantynivka, in Ukraine’s Donetsk region — a key city the Russian president claims his army now holds. Ukraine’s General Staff responded that Kostiantynivka remains under the c