Thanks to the agreement between our two presidents, Serbia has the lowest gas prices in Europe, Serbian minister without portfolio in charge of international economic cooperation, Nenad Popovic, said MOSCOW, April 25. /TASS/. Belgrade will never impose sanctions against Moscow, despite constant external pressure regarding this policy, Serbian minister without portfolio in charge of international economic cooperation, Nenad Popovic, said in an interview with Vesti. "For the fourth year in a row,