(Reuters) -Ukrainian forces in the eastern city of Soledar are holding their positions and inflicting significant losses on Russia troops, President Volodymyr Zelenskiy said in a video address on Thursday. A Russian-installed official in Ukraine’s Donetsk region earlier said “pockets of resistance” remained in Soledar, undermining claims that the town had been captured. Zelenskiy thanked two Ukrainian units in Soledar which he said “are holding their positions and inflicting significant losses on the enemy.” He did not give more details. Zelenskiy also said he had met senior Ukrainian commande…