he was a vulnerable front runner and some of the early national polls seem to bear that out as his enormous leads late, but not south carolina. >> not in softer liner. i think he's still a vulnerable front runner. we've got another debate coming up at the end of the month and the bar for him is going to be very high. if he has to do well in that debate. i don't know if you can keep on turning in a kind of weak performance like he did in miami over and over again and keep these numbers up, but he does have a high ceiling. he has years and years of goodwill built up, especially among the black community and don't forget south carolina is a lot more like the rest of the democratic primaries in iowa or new hampshire is because it's diverse, because it has a lot of african-american voters. you can't do well in the african-american community are not going to be the nominee. >> chris: biden also made a major foreign policy speech today saying that he wants to end america's, what he called forever wars. here's a taste of his speech. >> i worked with president obama to craft the military and diplomatic campaign that