Biden spoke hours after the blasts killed at least a dozen American troops and scores of civilians, the worst day of casualties for U.S. forces there in a decade
Taliban spokesman Zabihullah Mujahadid, however, tweeted that it was a controlled explosion by US forces destroying equipment at the airport and Kabul residents should not worry
Macron said France's ambassador in Afghanistan would not remain in the country for security reasons and would operate from Paris, adding French special forces were at Kabul airport