Restrictions on NIS, the countrys sole refinery, could trigger a national energy crisis, President Aleksandar Vucic has warned

US sanctions on Serbia's Russian-majority-owned oil company, NIS, have been activated, prompting neighboring Croatia to halt crude deliveries and raising the risk of a shutdown at Serbia's only refinery.

Washington had granted Belgrade several temporary exemptions from restrictions imposed in January on NIS (Petroleum Industry of Serbia), in which Russia's Gazprom and Gazprom Neft hold a majority stake. The most recent waiver, issued on October 1, was valid for only one week.

NIS confirmed Thursday that the US Treasury Department had not extended the waiver, leaving the company under full sanctions. It said it was "working to overcome the situation" and would engage with the US authorities to seek delisting.

The new sanctions have forced Croatia to stop crude supplies, pushing Serbia's only refinery to the brink of a shutdown, President Aleksandar Vucic said on Thursday. He warned the facility, a critical supplier of gasoline and jet fuel, faces closure by November 1 unless deliveries resume.

"These are extremely severe consequences for our entire country. It's not just about the functioning of one company," Vucic said in a televised speech.

The sanctions effectively bar the company from purchasing crude oil or exporting refined products.

Croatian pipeline operator JANAF, the sole supplier of crude to the refinery, has already announced it will halt all business with NIS. Analysts say the company's only recourse is for the US to reverse the sanctions or for its Russian shareholders to divest.

The impact swiftly reached consumers, as NIS notified customers that its network of some 350 stations would no longer accept American Express, Mastercard, or Visa cards.

NIS is a leading Balkan energy company with an oil refinery in Pancevo, near Belgrade, and a retail network of more than 400 filling stations. Gazprom Neft is the largest shareholder with a 44.85% stake, Gazprom holds 11.3%, and the Serbian state owns 29.87%.

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Although Serbia formally seeks to join the EU, it has refused to take part in Western sanctions on Russia over the Ukraine conflict. Brussels and Washington have repeatedly pushed Belgrade to sever its energy ties with Moscow, a key historical partner.

(RT.com)