Days before the leaders of Russia and the U.S. hold a summit meeting in Alaska, Moscow’s forces breached Ukrainian lines in a series of infiltrations this week in the country’s industrial heartland of Donetsk.

Small groups of Russian troops have pierced parts of Ukraine’s defenses in its eastern Donetsk region, according to local officials, as Russia appears to be making an 11th-hour dash to snatch as much territory as possible ahead of the planned meeting between President Vladimir Putin and his US counterpart Donald Trump on Friday.

Ukrainian President Volodymyr Zelenskyy is not expected to attend. While Trump and Putin negotiate Kyiv's future, the Ukrainians will be absent. Trump said Wednesday that a potential second summit bringing Putin and Zelenskyy together is possible after the Alaska event.