11.   Late Friday, U.N. spokesmen insisted that further airstrikes remained an option.

12.   Most of the hostage soldiers were French, and Serbs warned they could be killed if there were further airstrikes.

13.   Serbs had detained peacekeepers at the site as insurance against further NATO airstrikes.

14.   Serbs also have taken hundreds of peacekeepers hostage as a shield against further NATO airstrikes.

15.   Serbs warned the peacekeepers could be killed if there are further airstrikes.

16.   Serbs warned the peacekeepers could be killed if there were further airstrikes.

17.   The Bosnian Serbs had set several demands for the release of the hostages, top among them promises of no further NATO airstrikes.

18.   The Bosnian Serb military chief refuses to free more U.N. hostages unless NATO promises to rule out further airstrikes, the United Nations said Sunday.

19.   The Bosnian Serbs had set several demands for the release of the hostages, among them promises of no further NATO airstrikes.

20.   The peacekeepers had effectively been held hostage against further NATO airstrikes since alliance planes struck Serb targets three weeks ago.