WASHINGTON: Presi-dent Joe Biden said on Friday he could not guarantee the final outcome of the emergency evacuation from Kabul’s airport, calling it one of the most “ difficult ” airlift operations ever.... The president is counting on cooperation from the Taliban, who ousted the Kabul government a week ago as US forces withdrew, plunging Biden into his biggest foreign policy crisis.... Isolated signs of opposition to the Taliban emerge in parts of the country Biden said US officials were in