Leaders of Montenegro, Serbia, North Macedonia and Albania - all Western Balkan countries blighted by wars in the 1990s that also aspire to join the European Union - met in the Albanian capital Tirana to give shape to the idea.
France and Germany organised a Western Balkans summit in Berlin to restart deadlocked talks between Serbia and Kosovo.
Aleksandar Vucic, an ultranationalist during the Balkan wars in the 1990s, embraced European values before coming to power in 2012. In coalition with the Socialists, Vucic controls 160 deputies in the 250-seat parliament.
Anti-government protests gripped Serbia on a weekend of demonstrations across the Balkans, but can they achieve anything?
Serbian protestors take to the streets to call for the end of Aleksandar Vuvic's rule, while demonstrating against endemic corruption and the lack of media freedom in the country.
Protesters briefly broke into Serbia's state television building in the capital Belgrade, demanding media freedom and unbiased coverage of more than three months of anti-government demonstrations.
Demonstrators defy freezing temperatures to rally against President Aleksandar Vucic in central Belgrade, in 11th consecutive weekend of protests.
Anti-government protests in Serbia continued this week for the sixth week, with protesters marching in silence to commemorate the assassination of Serb politician Oliver Ivanovic this time last year in Northern Kosovo.
President Aleksandar Vucic is accused by the opposition and civil society of having established autocratic rule and total control over media, using them to campaign against opponents.
President Aleksandar Vucic has increasingly clamped down on the opposition arousing widespread discontent with his rule.
Kosovo passed laws to build an army, asserting its statehood in a US-backed move that prompted outrage in Serbia, which does not recognise its former province's independence.
Kosovo's parliament has approved the formation of an army, a move that has angered Serbia which says it would threaten peace in the war-scarred region.
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