LONDON/BELGRADE (Reuters) - Serbian oil firm NIS is struggling to buy oil from traders abroad, while at home its former clients are seeking alternative fuel suppliers as pending U.S. sanctions have impacted operations, sources familiar with the matter told Reuters.
NIS is majority-owned by Russia's Gazprom Neft and Gazprom and as such is one of Russia's last remaining oil assets in Europe. It is crucial to Serbia's energy security as it operates the Balkan country's only oil refinery.
