Abdulah Skaka (R), mayor of Bosnia and Herzegovina's capital Sarajevo, attends a meeting during the Capitals Summit 2019 held in Sarajevo, Bosnia and Herzegovina (BiH), April 4, 2019. Mayors of South East Europe have committed themselves on intensive cooperation and continuous linkage of the capital cities of the region at the Capitals Summit 2019 on Friday. (Xinhua/Nedim Grabovica)