Secretary-General of the Organization of Islamic Cooperation (OIC) Hissein Brahim Taha arrived in Doha Sunday morning to participate in the emergency Arab-Islamic summit scheduled to be held in Doha on Monday.OIC Secretary-General Hissein Brahim Taha and the accompanying delegation were welcomed upon arrival at Hamad International Airport by HE Director of the Protocol Department at the Ministry of Foreign Affairs Ibrahim bin Yousif Fakhro.