john nagl, thank you. >> thank you, margaret. >> holman: those are some of the day's major stories., back to gwen and judy in charlotte. >> woodruff: and we're back overlooking the democratic >> suarez: i'm with mayor anthony fox, the mayor of charlotte, north carolina, the host city. and, mayor, the meteorologists have given us some complicated news. it's making convention week a little difficult for you guys. tell us more. >> well, look, we have to be concerned with public safety. any event in our stadium would have requiredded people to be in lines for self hours, in all likelihood. and with the threat of thunderstorms, it made sense to cancel the event over at the bank of america stadium. it's disappointing for many of the people in north carolina but we have to do what we have to do. >> suarez: did you wait till the very last minute to get the best weather forecasting advice you could before pug the trigger on the cabs cancellation? >> i think the campaign took enormous pains to wait out the scenario so they could make the best call possible. obviously, it could have made a dec

for more on this i'm joined by john for more on this, i'm joined by john nagl, a retired army lieutenant colonel, and veteran of both iraq wars. he's commanded u.s. trainers of both iraqi and afghan forces. and vali nasr, dean of the school of advanced international studies at johns hopkins university. he served in the obama administration's state department focusing on afghanistan and pakistan. gentlemen, thank you both for being with us. vali nasr, let me start with you. general dempsey, we heard him say this is a very serious threat to the war effort. we know that secretary panetta, in addition to what we just heard him say, also called this the last gasp of a dying insurgency. who is right? >> well, the taliban have been under pressure for some time, but they are proving to be very entrepreneurial and effective in carrying out new ways of attack. they're trying to send a message to the afghan people that they still have fight in them, that they have momentum on their side. i think the fact that these attacks continue and we see more and more americans and foreign troops die and there

john nagl, thank you. >> thank you, margaret. >> holman: those are some of the day's major stories., back to gwen and judy in charlotte. >> woodruff: and we're back overlooking the democratic >> suarez: i'm with mayor anthony fox, the mayor of charlotte, north carolina, the host city. and, mayor, the meteorologists have given us some complicated news. it's making convention week a little difficult for you guys. tell us more. >> well, look, we have to be concerned with public safety. any event in our stadium would have requiredded people to be in lines for self hours, in all likelihood. and with the threat of thunderstorms, it made sense to cancel the event over at the bank of america stadium. it's disappointing for many of the people in north carolina but we have to do what we have to do. >> suarez: did you wait till the very last minute to get the best weather forecasting advice you could before pug the trigger on the cabs cancellation? >> i think the campaign took enormous pains to wait out the scenario so they could make the best call possible. obviously, it could have made a dec