Serbian President Aleksandar Vucic (R) and visiting Russian Foreign Minister Sergey Lavrov attend a joint press conference in Belgrade, Serbia, on Feb. 21, 2018. The European Union (EU) will have to understand Serbia's relations with Russia, if it wishes to see it as its future member, Serbian President Aleksandar Vucic said after meeting visiting Russian Foreign Minister Sergey Lavrov on Wednesday in Belgrade. (Xinhua/Predrag Milosavljevic)