U.N. officials expressed hope for a "new relationship" with theBosnian Serbsafter the last of more than 370peacekeeper hostageswere released. What sort of relationship depends on which side's account of the terms is accurate. The Serbs claim U.N. officials have pledged not to launch any more air strikes. The U.N. denies any linkage. U.N. troops have abandoned to Serb forces the heavy weapons depots around Sarajevo, andthe U.N.says it will work to re-establish supply routes for humanitarian aid to embattled Muslim enclaves. "Certainly this marks a retreat for the U.N.," saysTIME's Mark Thompson. "The question is, now that they've got these peacekeepers out of areas where they are potential hostages, what will they do?"