The international community has decided to postpone handing over power to politicians in Bosnia-Hercegovina until the end of June 2008.
The office of the High Representative in Bosnia-Hercegovina will stay open 12 months longer than planned.
The office can fire Bosnia's top politicians and officials.
The decision was taken in Brussels by the 55-nation Peace Implementation Council. It steers the Dayton peace process agreed in 1995.
The current High Representative, Christian Schwarz-Schilling, will still leave on schedule at the end of June this year.
The three communities - Muslims, Serbs and Croats - still disagree over the High Representative's demand that the country's 15 police forces are integrated into one apolitical and ethnically-mixed force for the whole country.
Bosnian Muslim protest
Meanwhile, several thousand Bosnian Muslims demonstrated in the Bosnian capital, Sarajevo, on Tuesday against the acquittal of Serbia on genocide charges.
Protesters blocked the main road into the city, expressing outrage at Monday's verdict by the International Court of Justice in The Hague - the UN's top court.
Some carried banners bearing the words "Betrayed Again".
They included relatives of the nearly 8,000 Muslim men and boys killed by Bosnian Serb forces at Srebrenica in 1995.
The court ruled that Srebrenica constituted an act of genocide, and that Serbia had failed to use its influence with the Bosnian Serbs to prevent it, but cleared Serbia of direct responsibility for genocide in Bosnia-Hercegovina.