The central event on the occasion of the Day of Serb Unity, Freedom and the National Flag was held today in Bijeljina. The ceremony was attended by His Holiness Serbian Patriarch Porfirije, President of Serbia Aleksandar Vučić, President of the Republic of Srpska Željka Cvijanović, Serb member of the BiH Presidency Milorad Dodik, President of the National Assembly of the Republic of Srpska Nedeljko Čubrilović, President of the Assembly of Serbia Vladimir Orlić, prime ministers of the Republic of Srpska and Serbia