The Yugoslav war crimes tribunal was restarting the trial Monday of seven Bosnian Serb military and paramilitary members charged with involvement in the massacre at Srebrenica of 8,000 Muslim men and boys. The trial is the Hague court's latest attempt to hold senior officials responsible for the 1995 massacre in the UN-declared safe haven in Bosnia. Five of the suspects face genocide charges in Europe's worst civilian massacre since the Holocaust. Two more are charged with war crimes and crimes against humanity. All the suspects have pleaded not guilty to the charges, which carry maximum life sentences.