On 15 May, Stjepan Mesić, a Croat, was scheduled to be the chairman of the rotating presidency of Yugoslavia. Serbia, aided by Kosovo, Montenegro, and Vojvodina, whose presidency votes were at that time under Serbian control, blocked the appointment, which was otherwise seen as largely ceremonial.
On 18 November 1991, the Croatian Community of Herzeg-Bosnia was established in Mostar. Mate Boban was chosen as its president. Its founding document said: "The Community will respect the democratically elected government of the Republic of Bosnia and Herzegovina for as long as exists the state independence of Bosnia and Herzegovina in relation to the former, or any other, Yugoslavia".