Once they had St John Philby, now they have this:
www.reuters.com
This is a great read, I encourage everyone to read it. With a bonus section about Iran's surveillance of U.S. consulate in Istanbul which helped them catch a couple of spies.

How the CIA failed Iranian spies in its secret war with Tehran
Gholamreza Hosseini got caught spying for the CIA in Iran. The story of how he was burned casts light on an epic U.S. intelligence failure.
This is a great read, I encourage everyone to read it. With a bonus section about Iran's surveillance of U.S. consulate in Istanbul which helped them catch a couple of spies.