15 November 2011 Updated at 11:42 ET
Is Iran already under covert attack?
Frank Gardner
BBC security correspondent
Seventeen Revolutionary Guards were killed in the explosion at Bid Ganeh at the weekend
Iran nuclear crisis
Q&A: Iran sanctions
Case against Iran strengthened
White House not on war path
Fuelling Bushehr
Assassinations of nuclear scientists, a sophisticated cyber-attack, and now, last weekend, a mysterious blast at a munitions base that has killed the "godfather" of Iran's ballistic missile programme.
link-
http://www.bbc.co.uk/news/world-middle-east-15741989