An Ukrainian U.N. peacekeeper stands guard behind four 120 mm mortars put by the Bosnian Army under U.N. control on Friday, at the Marshal's Tito barrack, the Ukrainian U.N. headquarters in Sarajevo on Saturday, Feb. 12, 1994. U.N. peacekeeper weapons led government and Bosnian Serb fighters under the watchful eyes of snipers on Sarajevo's front lines. But a shaky truce that began after NATO's treat to bomb Serbs was holding early Saturday. (AP Photo/Laurent Rebours)