The three-day seminar, which ends on Sunday, was organised by the Atlantic Alliance of Serbia and is being attended by NATO officials and military and defence ministry representatives from the countries in the region.
The seminar discusses the foreign and defence policies of the countries in the region as part of Euro-Atlantic cooperation, cooperation within NATO, international military cooperation and participation in international peace and military missions.
Representatives of Serbia's defence ministry and military diplomats said that a declaration on Serbia's military neutrality excluded its NATO membership, but that its commitment to contribute to the establishment of lasting peace and security in the world, and notably in the region, had been recognised.
Croatian defence ministry representative Kristijan Beljan said Croatia's defence policy and NATO membership were significantly influenced by the gaining of independence, the democratisation of society and economic transition processes as well as global changes such as the fall of the Iron Curtain, the development of new technologies, and new global threats to peace.
"Croatia decided to protect its vital national interests through global and regional processes," Beljan said, adding that NATO membership had helped Croatia develop its defence system as well as assume new responsibilities within the alliance.
He said one of the joint goals in the region was to provide for stability and security through Euro-Atlantic cooperation. He recalled that 257 Croatian troops were taking part in eight international missions.
Montenegrin defence ministry representative Ljiljana Jankovic said "NATO enlargement is very important for the stability of the region so that the 1990s don't repeat themselves."