A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Unless stated otherwise, all information herein is taken from Crossroads of Twilight, Prologue.
The White Ribbon is a means by which opposing factions can meet under what is a flag of truce. It is known from Arad Doman and is not known if other lands have the same system. For three days, people pledge under their Light and hope of salvation and rebirth not to draw a weapon or shed blood. Rodel meets a group of powerful Domani lords under the White Ribbon, though he is not completely convinced it will hold them, or the men pledged to them.