Sen. Lindsey Graham, R-S.C., warned in an interview with Fox News Saturday that withdrawing U.S. troops from Afghanistan would lead to “another 9/11,” saying that America can’t “outsource” U.S. national security to the Taliban.

“If we left tomorrow, the Taliban cannot be trusted to take care of ISIS and Al Qaeda,” Graham told chief intelligence correspondent Catherine Herridge. “They don’t have the capability. So when you ask our intelligence community…what would happen to America if we withdrew all of our forces. They tell us without any hesitation it would lead to another 9/11 in a matter of time.”

When asked what the timeframe for such a situation would be, Graham said it would be “years not decades.”