BELGRADE: The United States has introduced sanctions against Serbia’s main oil supplier, which is controlled by Russia, the company said on Thursday. Serbia’s president said this could have “unforeseeable” consequences for the Balkan country. Serbia depends almost entirely on Russian gas and oil supplies, which it receives mainly through pipelines in Croatia and other neighboring states. The gas is then distributed by Petroleum Industry of Serbia (NIS), which is majority-owned by Russia’s state oil monopoly Gazprom Neft.

Sanctions imposed on NIS in January as part of its crackdown on the Russian energy sector go into force.

BELGRADE: The United States has introduced sanctions against Serbia’s main oil supplier, which is controlled by Russia, the company said on Thursday. Serbia’s president said this…