The possibility of mediation in theBosnian conflictseemed to fade rapidly today, with U.N. Secretary-General Boutros Boutros-Ghali threatening to withdraw the 24,000-strong peacekeeping force after he was snubbed by the Serbs in Sarajevo. If Boutros-Ghali follows through, the troop recall could result in an escalation of attacks by Serbs and heavy casualties on the Muslims, who depend on the U.N. forces not just for protection but also for food. Boutros-Ghali made the comments after Bosnian Serb leader Radovan Karadzic refused to even meet him today as he tried to negotiate a cease-fire. The U.N. chief lashed out at Karadzic, saying he "has done his people a great disservice." But other U.N. diplomats said that there was no Security Council support for immediate withdrawal of the U.N. force.Post your opinion on theInternationalbulletin board.