gone, the streets empty. the taliban — in american military vehicles — have set up roadblocks to stop people getting near. some taliban leaders claim to have already taken over parts of the airport — a claim denied by the mod and the pentagon. they're not in charge of any of the gates. of any of the airport operations. that is still under us military control. the global effort to get people to safety is now ending. these german troops have already returned home. spanish troops are back in madrid. british and american forces will be the last to go. the 20—year western mission in afghanistan ends in a chaotic, bloody withdrawl with the taliban ready to take charge. graham satchell, bbc news. the chief of the british armed forces, general sir nick carter,