Leaders of Serbia, Bulgaria, Romania and Greece attend joint press conference

Serbian President Aleksandar Vucic (2nd R), Bulgaria's Prime Minister Boyko Borisov (2nd L), Greek Prime Minister Alexis Tsipras (1st R) and Romania's Prime Minister Mihai Tudose attend a joint press conference in Belgrade, Serbia on Dec. 9, 2017. Leaders of Serbia, Bulgaria, Romania and Greece agreed on Saturday that the whole region needs to be included in the European Union (EU) and that the cooperation on joint projects can bring the region long-awaited prosperity and stability. (Xinhua/Nemanja Cabric)