In 1919, after the Kingdom of Yugoslavia was established, Kulenović joined the Yugoslav Muslim Organization, a political party of Bosnian Muslims. For every election held in Yugoslavia, he was elected to the National Assembly as a representative of the Brčko municipality. When the Vidovdan Constitution was voted on, his party ordered its members in the National Assembly to support the new constitution; however, Kulenović boycotted the voting as he was against the Constitution and thus didn't violate his party's orders. In 1921, he protested to the Assembly the massacre of 200 Muslims carried out by Serbs in northern Montenegro. When his party divided into the Centralist (pro-Serb) and the pro-Autonomy list, Kulenović supported the pro-Autonomy.
In the 1923 election, the Autonomists defeated the pro-Serbian faction. Kulenović was also among those who made the Sarajevan Punctations, in which the YMO condemned the Serbian nationalist policy over Bosnia and Herzegovina and demanded Bosnian autonomy.[1] After Mehmed Spaho, the President of the YMO, died, Kulenović was elected as the organization's new president on 29 June 1939.[2] Uzeir Hadžihasanović who was influential amongst the Muslims, helped him win this post.[3] At this time, the YMO was in a coalition called the Yugoslav Radical Union (YRU); the coalition was led by Milan Stojadinović. The YMO's membership in the YRU threatened YMO's existence, and Kulenović tried to save the party. His actions led to the division in the YRU.[2]
During the crisis of the YRU, Kulenović stated to the press: Gentlemen, I am a Croat and a Croatian nationalist... And not only that I am a Croat and a Croatian nationalist, but the Bosnian Muslims are, as a whole, Croats and part of the Croatian nation.
During the tenures of prime ministers Dragiša Cvetković and Dušan Simović, Kulenović was a minister without portfolio and Minister of Forestry and Mining. In 1939 Kulenović opposed the partition of Bosnia and Herzegovina when the Banovina of Croatia was created, and he also opposed the idea of Serbian nationalist ministers and politicians that the parts of Bosnia and Herzegovina, which were not included in the Croatian Banovina, should be included in Serbian lands. During the German Invasion of Yugoslavia in April 1941, Kulenović didn't leave the country as most ministers did; he secretly left Belgrade and went to Užice, from where he went to Sarajevo and later to Brčko, where his family lived.[2]
Kulenović lived in Italy until 1948, then immigrated with his family to Syria.[4] He lived there until his death on 3 October 1956 in Damascus. While in Syria, the expatriate Croat community in Argentina published a collection of his journalistic writings. In 1950, the Bosnian Muslim Community in Chicago published a speech he wrote for the Muslim Congress following World War II in Lahore, Pakistan.
A few months before Kulenović's death, the Croatian Liberation Movement was formed, with Kulenović as a founder and signatory. His son, Nahid continued working with this Movement, but was assassinated by the UDBA in Munich in 1969.[5][6]
Works
A Message from Croat Moslems to their Religious Brethren in the World, 1951., (reprint, Createspace, 2011.)
Džafer Kulenović, Sabrana djela, 1945.-1956., Buenos Aires, 1978. (editors: Jere Jareb, Stjepan Barbarić, Miron Krešimir Begić, Ragib Zukić)
Izbor iz djela: članci i rasprave, Uzdanica, Zagreb, 1992.[7]