let's find out more from paula hancocks in seoul for us. paula, good morning to you. >> reporter: hello, randi. the message basically was bad behavior will not be rewarded. this is what president obama wanted north korea to hear. now, there was a press conference between him and his south korean counterpart and had a consensus north korea was violating u.n. security council resolutions and violating the deal the united states struck with them a few weeks ago because they were going to go ahead with this satellite launch. both presidented called on north korea not to carry out the launch. there were a number of questions asking what would happen if they did go ahead with the launch, what were the consequences and that's something the presidents were not particularly specific about. we did hear from mr. obama that they would deepen the isolation of the country and would also jeopardize relations with its neighbors, but there was nothing specific about whether there would be more sanctions or whether or not they'd go back to the u.n. security c

paula hancocks joins us from the capital of seoul. hat were some of the highlights from the remarks that president obama made as well as the south korean president? >> reporter: well, rang di, what we saw and what we were actually expecting was the fact they both stood next to each other and said there was a consensus between them that north korea was in direct violation of u.n. security council resolutions of promises that it had already made to the united states just a few weeks ago that it wouldn't carry out nuclear tests or missile tests and it was also going against its own commitment, so this is what we were expecting both sides condemning north korea saying that this missile launch, this satellite launch should not go ahead. now, one interesting thing was many of the questions were asking what will you do if they do go ahead with this missile launch, what are the consequences. they didn't have an exact answer for that. there was a suggestion there could be further security council resolutions for the sanctions, but neither presi

paula hancocks reports on why u.s.sidents feel the need to see the dmz in person. >> reporter: former u.s. president bill clinton described it as the scariest place on earth when he visited in 1993. ironically called the demilitarized zone, the border between north and south korea is actually the most heavily fortified border in the world. 2.5 miles, or 4 kilometers wide, much of the dmz is a no-man's-land buffered by watch towers and land mines. the joint security area is where the armistice was xined between the north and south, where negotiations take place today and it's the one place u.s. soldiers can see their north korean counterparts up close. it's a tourist site for visitors to south korea, and, of course, for american presidents. ronald reagan, the last american leader of the cold war visited the final frontier of the cold war in 1983. his assessment -- >> looks like a hollywood back lot. >> reporter: previous u.s. president george w. bush visited in february 2002, just weeks after he granted north korea as p

the ceo of the korean national oil corporation spoke to paula hancocks about the agreement. >> there's of competitions still many companies, many countries are trying to enter that i know. that's why great things for us. we can be real, i mean, major player. so we say the premium. we just entered into the premiere league. >> the united states is actively trying to pressure south korea as well as other countries to try and lower the dependence on iranian oil to be in line with the u.s. sanctions. are you able to lower your dependence? >> maybe i think the government can make it possible. actually we can have alternative sources very easily. for example, we have iraq. if there is any crisis, they are ready to support us. the agreement has been made last year. so i think the government can make alternative sources. >> what other sources around the world do you actually have at your disposal to be able to plug up the gap from iran if you have to? >> we have produced in many countries, including vietnam. we are producing oil in the north sea in the uk and also norway and denmark and netherl

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