(ANSA) - BELGRADE, JAN 15 - During a visit to Belgrade, Hungarian Foreign and Trade Minister Petar Szijjarto assured Serbian Minister of Mines and Energy Dubravka Djedovič Handanovic that negotiations to sell Gazprom's majority stake in Serbia's NIS, which is under US sanctions due to its Russian controlling interest, are progressing well and the first concrete step is expected in the coming days.nis ga According to the Tanjug agency, citing the Hungarian minister, the Pančevo refinery, the only active one in Serbia, is of "strategic importance" for Mol. Therefore, media reports that the Hungarian oil company intends to close the refinery if it acquires Nis are false. (ANSA).