The Department of Defense has adjusted its timeline on when the Islamic State in Afghanistan, ISIS-K, is expected to regain its ability to attack internationally.

Gen. Frank McKenzie, the head of U.S. Central Command, told the Senate Armed Services Committee on Tuesday the DOD believes the terror group will have “external attack capability” between “12 to 18 months,” which is a more delayed timeline than the six to 12 months Dr. Colin Kahl, the Undersecretary of Defense for Policy, presented to the committee back in October.