President Biden's National Security Adviser has confirmed that the US Government does not know how many Americans are in Afghanistan awaiting evacuation from Kabul Airport.
For days, White House estimates of the number of Americans in Afghanistan has ranged from 5,000 to 12,000.
Now Jake Sullivan has told CBS News presenter Norah O'Donnell that it's unclear how many people the US military needs to get out.
IN: "The US government….."
OUT: "….come to the airport"
DUR: 34 seconds