Serbian oil company NIS has recently come under intense scrutiny amid evolving international sanctions and market shifts. Reliable sources, as reported by Reuters, confirm that the company is struggling with oil procurement from foreign traders. Meanwhile, its former clients are actively seeking alternative fuel suppliers—a reaction spurred by the anticipated impact of U.S. sanctions. Among the notable aspects of NIS is its close relationship with Russian giants Gazprom Neft and Gazprom, positioning it as one of the last major Russian oil assets in Europe.