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But that remains to be seen and it is something u.s. officials will be watching very closely, shep. >> shepard: thanks. one of the best verse humans on north korea in the united states is with us now. the former new mexico governor, bill richardson is here and has visited north korea several times and has a decent idea what is happening. what's happening? >> what is significant about these sanctions is that china not just signed on but my understanding they helped draft this. cowboy is very upset with the last long-range miss of the north koreans and they have leverage over north korea. they p...

States. how seriously are u.s. officials taking this threat? >> seriously, shep in the sense they do not like being threatened by anyone, least of all an unpredictable dictatorial man like kim jong-un armed with a nuclear weapon. but u.s. officials appear confident that north korea is in no position to carry out its threats. >> the united states is fully capable of defending against a ballistic missile attack. furthermore, we're continuing to update capables capables and wen firm with the protection of south korea and the regional peace and security. >> despite the long-range missile launch no...

National interests of the united states if there's imminent danger. >> shepard: a problem with the law. >> but there's some circumstances where those tough choices need to be -- they're very tough choices. >> shepard: there are difficult circumstances and one circumstance which we're dealing with now is agents from two governments, following an american citizen for 48 hours, knowing exactly where he was so they could send a drone down to kill him and killed his son, too when it appears they could have handled this in another way but didn't because they didn't want information getting out. seem...

>> right. the concern i have is conflagration with south korea and some of their neighbors. it seems the north korean military have the upper hand over the civilian side there. that's troublesome because the foreign ministry, the people we met with when i was there, they seemed more moderate, but it seems the young new leader is being influenced by the hardliners, perhaps his uncle, by the military. so that's a little troublesome. the rhetoric, you have to take it not that seriously, but this time it's intensified and i'm worried about kind of incident. >> shepard: dennis rodman. >> well, he g...

That could possibly reach and strike hawai'i, for instance, or alaska, or the u.s. lower 48, shep. >> does anybody anywhere think these sanctions might make a difference? >> well, certainly the u.s. ambassador to the united nations, susan rice, thinks these are some of the most sweeping sort of punishments ever leveled by the security council. listen. >> taken together these sanctions will bite and bite hard. they increase north korea's isolation and raise the cost to north korea's leaders of defying the international community. reporter: the key here is china. the chinese have signed on to th...