Ivory Coast President Alassane Ouattara (2nd R) lays a wreath on the casket of one of seventh coffins of peacekeepers from Niger during a memorial ceremony in Abidjan, Ivory Coast, June 14, 2012. Seven peacekeepers from Niger were killed in the Southwest of Cote d'Ivoire last week. UN hopes the perpetrators of the ambush that killed seven peacekeepers will be "apprehended" and "justice will be done". [Xinhua]