It also says Iran remains a major state sponsor of terrorism and continues to defy demands it prove its nuclear ambitions are peaceful, even as Washington pursues negotiations on that front.
In its annual global terrorism report, the State Department said today that losses in al-Qaeda's core leadership in Pakistan and Afghanistan have "accelerated" the network's decentralization.
That has resulted in more autonomous and more aggressive affiliates, notably in Yemen, Syria, Iraq, northwest Africa and Somalia, it said.