Ukraine, Russia battle in the east as Zelenskyy visits front

  • Ukrainian servicemen gather next a Russian BMP-2, an infantry combat vehicle, in the Kharkiv area, eastern Ukraine, Sunday, May 29, 2022. The Ukrainian military has been recovering abandoned Russian combat vehicles on the frontline to repair them and use them to their advantage. (AP Photo/Bernat Armangue)

  • Ukrainian servicemen park a Russian BMP-2, an infantry combat vehicle, in the Kharkiv area, eastern Ukraine, Sunday, May 29, 2022. The Ukrainian military has been recovering abandoned Russian combat vehicles on the frontline to repair them and use them to their advantage. (AP Photo/Bernat Armangue)

  • A patient is carried on a stretcher to board a medical evacuation train run by MSF (Doctors Without Borders) at the train station in Pokrovsk, eastern Ukraine, Sunday, May 29, 2022. The train is specially equipped and staffed with medical personnel, and ferries patients from overwhelmed hospitals near the front line, to medical facilities in western Ukraine, far from the fighting. (AP Photo/Francisco Seco)

  • In this photo provided by the Ukrainian Presidential Press Office on Sunday, May 29, 2022, Ukrainian President Volodymyr Zelenskyy, centre, inspects damaged buildings, as he visits the war-hit Kharkiv region. Volodymyr Zelenskyy described the situation in the east as "indescribably difficult." The "Russian army is trying to squeeze at least some result" by concentrating its attacks there, he said in a Saturday night video address. (Ukrainian Presidential Press Office via AP)

POKROVSK, Ukraine — Russian and Ukrainian troops traded blows in fierce close-quarter combat Sunday in an eastern Ukrainian city as Moscow’s soldiers, supported by intense shelling, attempted to gain a strategic foothold to conquer the region. Ukraine’s leader also made a rare frontline visit to Kharkiv, the country’s second-largest city, to assess the strength of the national defense.