Ukraine’s President Volodymyr Zelensky made an unannounced visit to the front-line city of Bakhmut on Tuesday, rallying troops on the country’s deadliest battlefield as Russia intensified its efforts.
Russian forces, including the Wagner private military company, have been fighting for the eastern city for nearly six months. Both sides have poured troops, tanks and artillery into the city, where brutal trench warfare has drawn comparisons to World War I. Separately, Mr. Zelensky is set to come to the U.S. Capitol to address Congress on Wednesday, though the tentative visit could be canceled over security concerns, according to people familiar with the matter.