While the PKK has been in the international spotlight in recent weeks, with Turkey mounting cross-border raids and threatening to launch an invasion of Iraq, not so much attention has been given to the Iranian offshoot, the PJAK. The group has been waging an insurgency against Tehran since 2004, which recently has escalated. A guerrilla leader told the New York Times last month that PJAK fighters had killed at least 150 Iranian soldiers and officials in Iran since August.

Iran accuses Washington of backing the group, and while the US denies this, local and foreign intelligence sources say the accusation is most likely true. According to a former US Special Forces (SF) commando currently based in Iraq who spoke on condition of anonymity, Special Forces troops are currently operating inside Iran, working with insurgent forces like the PJAK. "That's what the SF does," he said. "They train and build up indigenous anti-government forces."