Bir Lahlu (liberated territories) October31,2012(SPS) President of the Republic, Secretary General of the Polisario Front, Mohamed Abdelaziz, on Tuesday, has urged Secretary General of the United Nations ,Ban Ki-moon, for “urgent intervention to avoid Moroccan brutal intervention against defenseless Saharawis in the occupied territories of western Sahara” at the eve of the visit of the personal envoy ,Kristopher Ross to the region.