of redistricting. how that plays out out could decide who controls congress. in new york, i m joshua johnson, welcome to the week. we begin in northern afghanistan, where the taliban have taken its last major city. the collapse of mazar-e-sharif they have taken three capitals just this week. today president biden authorized troops to the legion. kelly kobiaya starts us off tonight from kabul. reporter: well, the president has announced that 5,000 troops will now be heading to afghanistan to help in what is described as this very limited mission of evacuating embassy staff as well as thousands of afghans who have helped in the