Approximately 61, 000 of these forces are assigned to the North Atlantic Treaty Organization (NATO)-led International Security Assistance Force (ISAF) in Afghanistan.

WHITEHOUSE: Letter from the President -- War Powers Resolution

The total number of U.S. forces in Afghanistan is approximately 90, 000, of which more than 70, 000 are assigned to the North Atlantic Treaty Organization (NATO)-led International Security Assistance Force (ISAF) in Afghanistan.

WHITEHOUSE: The White House