Two quite different views:

Official Launching of New Suicide Terrorist Organization in Iran

(Well, the one Iranian exile I have talked to about this would agree with most of that statement)

The Logic of Suicide Terrorism (interview with Robert Pape)

If Islamic fundamentalism were the pivotal factor, then we should see some of the largest Islamic fundamentalist countries in the world, like Iran, which has 70 million peopleâ€"three times the population of Iraq and three times the population of Saudi Arabiaâ€"with some of the most active groups in suicide terrorism against the United States. However, there has never been an al-Qaeda suicide terrorist from Iran, and we have no evidence that there are any suicide terrorists in Iraq from Iran.

Wolfgang