[SPS]Addis Ababa -The President of the Republic, Secretary-General of the Frente POLISARIO Mr. Mohamed Abdelaziz has called on the African Union to act in favour of completing the liberation of the occupied parts of Western Sahara, in a speech delivered Saturday at the Summit of OAU-AU 50th Golden Jubilee Celebration, taking place in the Ethiopian capital, Addis Ababa.