Centre for security Studies (CSS) from Sarajevo, in cooperation with Centre for Eurpean and North Atlantic Affairs (CENAA) from Bratislava, with support of Ministry of Foreign and European Affairs of the Slovak Republic and the Atlantic Council of Montenegro, has organized a unique expert round table “Visegrad Four Experience from the Security Sector Reform: Security and Defence Cooperation of the Western Balkan countries”, which was held in hotel Bosnia in Sarajevo, Bosnia and Herzegovina, on 28th October 2013.