It is believed many were executed. I have heard credible eyewitnesses' accounts from refugees of mass executions of men and boys by Bosnian Serb soldiers,'' John Shattuck, assistant U.S. secretary of state for human rights, told reporters after interviewing Srebrenica survivors in Tuzla and Zenica. Tadeusz Mazowiecki has resigned as the UN's chief investigator of human-rights abuses in former Yugoslavia. Heavy fighting has been raging in the region. Serbs from Croatia have joined their allies in attacking the Bosnian enclave of Bihac, and blocking virtually all food and aid shipments there.
Aid workers say much of the civilian population in the enclave is on the brink of starvation.
Military analysts say Serb nationalists may launch a major assault to try to completely choke off Sarajevo before the coming winter. UN analysts told Reuters that Serbs have been massing troops around Kalinovik, south of the city. Serb nationalist Gen. Ratko Mladic reportedly said in an interview last week. Serb forces are expected to try to block any international response by taking UN hostages, or quickly moving their weapons near UN positions to prevent air strikes. Conditions in Sarajevo, meanwhile, are increasingly grim.