The "terrorist groups" in question seem to be those that threaten the mullahcracy. "Iran to discuss Iraq 'terrorist groups' with US," from [1] Gulfnews (thanks to Sr. Soph):

Tehran: Iran said on Sunday it wanted to discuss the activities of "terrorist groups" when it next holds talks with the United States about boosting security in Iraq.

Foreign Ministry spokesman Mohammad Ali Hosseini suggested that the fourth round of talks on Iraqi security may be held early next month.

"When it comes to the topics to be covered we have activities of some terrorist groups to be included," he said when asked about the People's Mujahideen Organisation of Iran (PMOI), which has bases in Iraq.

The PMOI is blacklisted by the United States and European Union.

The PMOI's political wing, the National Council of Resistance of Iran, last week accused Iran of pursuing efforts to develop nuclear weapons.

Didn't those fools read the NIE report?