President Trump and President Vladimir V. Putin both claimed that Ukrainian forces were surrounded. Ukraine’s top military commander vowed to “hold the line.”

Pro-Russian war blogger Two Majors said a major battle was under way for Sudzha and that Russian forces had surprised Ukrainian soldiers by entering the area via a gas pipeline.

Russia's Security Council's Deputy Chairman Dmitry Medvedev attends a meeting of the Council for Science and Education at the Joint Institute for Nuclear Research in the Moscow region's city of Dubna,