US Defense Secretary Lloyd Austin told Congress on June 17, that an extremist group like Al Qaeda or Islamic State (IS) could regenerate in Afghanistan and pose a threat to America within two years of the US troop withdrawal, reports bakhtarnews.com. Along with Austin, General Mark Milley, the Chairman of the Joint Chiefs of Staff, also testified at a at a Senate Appropriations Committee hearing. Milley said that the US is working to prevent an outcome where the Afghan government collapses but cautioned “there are no guarantees in any of this”.