Afghanistan's former President Ashraf Ghani on the U.S. withdrawal and Taliban takeover

Last August, the Taliban swept into Kabul after conquering the country at a torrid pace. Afghan security forces did not resist, the American withdrawal was thrown into further chaos, and the Afghan government dissolved in hours. Ashraf Ghani, the country's former president who fled Kabul in a helicopter, joins with Nick Schifrin to discuss the withdrawal and the Taliban takeover.