51.  But Clark said persistently unfavorable weather conditions had kept the bombing from having full effect on the Serb forces on the ground in Kosovo.

52.  But Clark said persistently unfavorable weather conditions had kept the NATO bombing from having full effect on the Serb forces on the ground in Kosovo.

53.  But in Kosovo, only the ragtag army faced Serb forces on the ground, the forces of the heavily armed Yugoslav National Army.

54.  But in year of mediating between Serb forces and Kosovo Liberation Army guerrillas, he investigated brutal killings by Serbs and the KLA.

55.  But NATO flatly rejected the proposal and seized on another rare day of clear skies to escalate its aerial bombardment of Serb forces and supplies.

56.  But Jackson, furious with what he saw as Serb footdragging, warned Yugoslav officials, saying that if Serb forces break the agreement, the bombing will resume.

57.  But spokesmen said that since Serb forces pulled out of Kosovo under the settlement that ended the bombing, the incidents have been overwhelmingly against Serbs.

58.  But the deal collapsed as ethnic Albanian fighters and Serb forces routinely flouted the cease-fire.

59.  But the soldiers themselves appeared inexperienced and the KLA is clearly benefiting, they said, from NATO bombing attacks that keep Serb forces pinned down along the border.

60.  But the Yugoslav proposal, in which Milosevic agreed to begin withdrawing some Serb forces if NATO airstrikes stopped at once, was instantly rejected by Schroeder.