while a force of up to 10,000 troops would stay behind. now, even that small force might be pulled out. called the zero option. it is now seriously being considered. but if america goes ahead and pulls all of its troops out, what would that mean on the ground? this was reporter: in the spring we went to one of afghanistan s most volatile regions. what would you say to americans who are still saying what are we doing here now? we do not want this country to fall back to a place where it is lawlessness, where it has the ungoverned territories. reporter: martha raddatz, abc news, washington. first lady michelle obama hosted the second annual state lunch for the 8 to 12 set at the white house. the guest list, 54 children who entered and won a healthy recipe contest. some included zucchini pancakes, mini-veggie pizzas, passion fruit banana smoothies.