Iranian President Mahmoud Ahmadi Nijad has cancelled his scheduled visit to Tunisia. Nijad was to visit Tunisia to participate in the Global Data Summit, due to be inaugurated today. No official comment was issued on the cause of the cancellation of the visit. It is worth mentioning that the Summit will be held in Tunisia under the supervision of the United Nations and in the presence of the UN Secretary General Kofi Annan and leaders of 50 countries.