ISLAMABAD: Former Chief of Army Staff, General (retd) Raheel Sharif is expected to be appointed defence advisor of Saudi Arabia-led military alliance of 39 Muslim countries to fight terrorism. Raheel Sharif, who recently retired as Pakistan’s Army Chief, has arrived in Saudi Arabia as a Royal Guest in a special plane. A grand reception is hosted in his honour in Riyadh, the capital of Kingdom of Saudi Arabia. It will also be attended by the…