Planning has been held up for a big public march through the streets of Siem Reap,  slated for this Sunday and originally scheduled to be the highlight of this year's International Peace Conference from September 18-24. The organisers, Youth for Peace, are still unable to give location details for the march, set for 2pm on Sunday, because they say they are waiting for necessary approvals and permissions to come through. About 300 participants are now arriving in town from Cambodia and the region, and from Rwanda, Morocco, Guatemala and Peru. The conference opens tomorrow with a ceremony, followed by a plenary session on war and peace in Cambodia.