year war in 2003. The conflict sucked in six neighbouring countries at its peak and killed 3 million people, mostly from hunger and disease. Already faltering after former rebel commander Laurent Nkunda seized the eastern town of Bukavu in June, the peace process was dealt a major blow by last week's massacre of 160 Congolese Tutsi refugees in Burundi. The killings have led to RCD-Goma, whose leadership is dominated by Congolese Tutsi, returning to its traditional stronghold in the eastern border town of Goma and calling for the peace accords to be re-examined. Kabila's camp has said there is no question of renegotiating the transition. With the former rebels back in Goma and repeated threats of war from the renegade RCD-Goma hardliner Nkunda, analysts fear Congo's government -- which was set up under the peace deal and unites the war's former foes -- may collapse. RCD-Goma's leader Azarias Ruberwa, one of Congo's four vice-presidents, called a party meeting in Goma for Monday to discuss the situation. RCD-Goma officials have said they are committed to peace and do not intend to pull out of government. In a conciliatory sign, Ruberwa also ordered Nkunda's arrest, RCD-Goma officials said. The renegade commander's whereabouts were not immediately clear. --SP 2329 Local Time 2029 GMT