The Islamic State Khorasan is growing “unabated” in Afghanistan, where the U.S. military has “almost no ability to strike,” according to retired Gen. Frank McKenzie, the former leader of U.S. Central Command.

The threat from ISIS-K, which is a regional branch of ISIS, to the U.S. homeland “began to grow as soon as [the U.S. military] left Afghanistan” at the end of August 2021, he said during a Sunday interview on ABC’s This Week.