Russian Foreign Minister Sergey Lavrov (C) attends the Black Sea Economic Cooperation's (BSEC) 35th council of ministers of foreign affairs meeting in Belgrade, Serbia, on Dec. 13, 2016. Lavrov arrived in Serbia on Monday for a two-day visit for the BSEC's 35th council of ministers of foreign affairs meeting. (Xinhua/Predrag Milosavljevic)