route. and the 1,000 already there. the orders come as the taliban gained even more ground, today, closing in on kabul. we have two reports, tonight, and we begin with kelly cobiella in kabul. >> reporter: tonight, president biden ordering more u.s. troops back into afghanistan. raising the total, now, to 5,000 personnel. already on the ground at a military compound at kabul airport for what the pentagon says is a limited mission to get americans out the u.s. ambassador and commander for u.s. forces in afghanistan, meeting with president ashraf ghani today and the head of afghan special forces now, in charge of defending kabul, as the taliban close in on the capital, reportedly seven miles away but not yet fighting in this propaganda video, they claim they ambushed an