11.   But since a fuel convoy was targeted about two weeks ago, only five tankers arrive daily, according to driver Saeed Rahim.

12.   Fuel convoys were targeted, too.

13.   Gunmen armed with rifles and rocket-propelled grenades hijacked a three-truck Danish fuel convoy in Bosnian Serb territory late Saturday, von Merveldt said.

14.   Lt. Col. Gary Coward said there also was increasing Serb restriction of U.N. fuel convoys.

15.   Meanwhile, Bosnian Serbs granted permission Monday for a fuel convoy to replenish U.N. supplies in Sarajevo.

16.   On Tuesday, Serbs denied security guarantees to all fuel convoys, leaving the airport as the only lifeline for U.N. troops in Sarajevo.

17.   Rebel Serbs robbed peacekeepers and blocked fuel convoys Friday, forcing some U.N. soldiers to use mules to save dwindling fuel stocks.

18.   Serbs denied security guarantees to all fuel convoys Tuesday, leaving the airport as the only lifeline for U.N. troops in Sarajevo.

19.   Serbs have refused safe passage for fuel convoys to various areas in the past weeks.

20.   Spokesman Lt. Col. Gary Coward said there also was a pattern in Bosnia of increasing Serb restriction of U.N. fuel convoys.