Kolak was born in
Gornji Ribnik near
Ključ to a
Bosnian Croat family. He studied at the
University of Belgrade's
Law School until 1940. Kolak joined the
Communist Party of Yugoslavia in 1941, joining the
Partisans. Later he became a member of the Central Committee of the Communist Party of Yugoslavia. After the war, Kolak held various posts: he was Secretary of the People's Assembly of Socialist Republic of Bosnia and Herzegovina, President of People's Assembly in
Banja Luka, President of the Supervisory Committee, and Minister in the Government of the Socialist Republic of Bosnia and Herzegovina. After that he was spokesman in the Ministry of Finance of the Government of
SFR Yugoslavia and spokesman of the
President of Yugoslavia,
Josip Broz Tito. From 1963-65 he was Vice President of the Executive Council of SR Bosnia and Herzegovina and became President of the Executive Council of SR Bosnia and Herzegovina in 1965 and held that post until 1967. After that he was Vice President of the Federal Government of
SFR Yugoslavia from 1967–69 and President of the Yugoslav Chamber of Commerce from 1969-74. == References ==