Serbia’s president has confirmed that Russia is prepared to sell its controlling stake in the country’s only oil refinery and that Hungary’s MOL has been discussed as a potential buyer, as sanctions pressure continues to squeeze Russian-owned downstream assets in Europe. President Aleksandar Vucic said talks are underway over the future ownership of Naftna Industrija Srbije (NIS), which operates the Pancevo refinery, according to remarks reported by Hungary Today. Vucic said Moscow now sees a sale of its stake as beneficial under…