https://www.europesays.com/1950909/ US extends Serbian oil firm NIS’s sanctions waiver for 30 days, President Vucic says #AleksandarVucic #CrudeOil #CrudeOilPrice #GazpromNeft #NIS #OilCompany #OilPrice #OilRefinery #petroleum #SanctionsOnRussia #UnitedStatesTreasury