While Israel has proven its excelling in this area time and again, the Iranians have not been able to penetrate Israel's wall of secrecy.

To prove our point is this quote form the outgoing Iranian Minister of Intelligence, Ismail Khatib just six days before the assassination of Hamas leader Haniyeh in his "secret" room in Tehran:

"Dismantling the Mossad's infiltration network in Iran is the greatest achievement during my tenure."