President Abdel Fattah Al Sisi mourned Tuesday with great sadness and sorrow, passing of former Secretary General of United Nations, Dr. Boutros Ghali, Al Bawaba News reported. Al Sisi sent his sincere condolences to Ghali's family and loved ones, both in Egypt and abroad. He stressed that Egypt and the world have lost today a political and legal pioneer, who enriched the world and not only Egypt, with his long career in international politics. The president described Ghali as an expert when it comes to international law and diplomacy.