visa approval has to come from the ministry of foreign affaires – Teheran

Note:

"From 23rd September 2011 onwards all foreign nationals travelling to the Islamic Republic of Iran are required to purchase Health and Accident Insurance for the period of their stay. Such insurance is presently available at the Imam Khomeini International Airport, Tehran. The cost of insurance between Euros 6/- to Euros 140/- as per the requirement of the travellers."