The governments of Serbia and Bosnia-Herzegovina have come together for their first-ever joint meeting.
The agenda of the November 4 session in Sarajevo was expected to include cooperation on finding missing persons, telecommunications, the protection of cultural heritage, and sustainable development.
The legacy of the 1992-95 Bosnian War, in which some 100,000 people were killed, continues to cast a shadow over relations between Serbia and Bosnia.
During the conflict, Belgrade supported the Bosnian Serbs in their quest to secede from Bosnia and join Serbia.
After the war, Bosnia was established as a federal state consisting of two largely autonomous entities, the Muslim-Croat Federation and the largely ethnic Serbian Republika Srpska.
Both Serbia and Bosnia aspire to join the EU.
With reporting by AP