The attack underlined the Taliban's ability to hit high-profile targets linked to the U.S.-backed government
The Taliban claimed responsibility for the attack
He compared himself to the fictional rogue CIA agent Jason Bourne
Nabil said President Ashraf Ghani's "repeated verbal summons" had put him under impossible pressure and forced his resignation.
No casualties were reported among the thousands of international military and contractors based at the heavily fortified site.
The attack coincided with the start of the Heart of Asia regional security conference in Islamabad
"Let the Americans take care of the supplies as they are there with NATO forces - this is the their problem first of...
No group has claimed responsibility but Taliban insurgents frequently carry out suicide and roadside bombings across the country.