Russia’s Defense Ministry claims that Russian troops have fought their way into the center of a strategically important eastern Ukraine town and raised the Russian flag there after a monthslong battle.

With Russia wearing down Ukraine’s stretched forces and U.S. President Donald Trump pressuring the two sides to end their nearly 3-year-old war, Kyiv and some of its European allies are discussing how that might be achieved in a way that would guarantee Ukraine’s future security.

Russia’s aggression in Ukraine has been a splitting point between Trump and the more hawkish Republican Senate conference. Last year, Trump blew up a deal to swap additional provisions for border security in exchange for aid to Israel and Ukraine. Aid to Ukraine ultimately passed without additional border security spending.