NATO says its peacekeepers in Kosovo will deal firmly with violence in the territory -- in line with the force's mandate. NATO troops came under fire earlier in the northern town of Mitrovica during clashes with ethnic Serbs. More than twenty polish UN police, and at least 8 French KFOR peacekeepers were hurt, along with a number Serbs. The trouble started after the UN authorities moved to evict Serb protesters from a courthouse they occupied last week. +++SYN-MAZ+++