Central European Initiative (CEI)

note - evolved from the Quadrilateral Initiative and the Hexagonal Initiative

11 November 1989 as the Quadrilateral Initiative, 27 July 1991 became the Hexagonal Initiative, July 1992 its present name was adopted

to form an economic and political cooperation group for the region between the Adriatic and the Baltic Seas

members - (18) Albania, Austria, Belarus, Bosnia and Herzegovina, Bulgaria, Croatia, Czechia, Hungary, Italy, Moldova, Montenegro, North Macedonia,Poland, Romania, Serbia, Slovakia, Slovenia, Ukraine