Transcript for North Korea issues threat amid summit jitters

The latest on North Korea just announced it demolished a nuclear site amid new doubts about the June meeting as a top north Korean threatens again to cancel and blasts vice president Mike pence. Terry Moran is tracking the story. Good morning, Terry. Reporter: Good morning. This morning that news from inside North Korea, a group of international reporters who are there, they witnessed what the north claims is the destruction of a main nuclear test site. The reporters were taken to the remote mountainous location shown some tunnels and facilities in the area. Then a countdown and a new explosion. No nuclear experts were there to verify it. It may have been a big photo-op to make it look like they're ready for a peace deal but they're sending sharply different signals. A top official close to Kim Jong-un spitting insults and defiance at the U.S. And igniting new tension threatening to call off the planned summit between Kim and president trump and singling out Mike pence calling him, quote, a political dummy for what the official called his, quote, ignorant and stupid remarks in an interview with Fox News Monday. Pence warning in that interview that the north Korean regime could end up like that of moammar Gadhafi's regime murdered by a mob during the revolution there eight years later, quote, this is what the official said, we will neither beg the U.S. For a dialogue nor take the trouble to persuade them and adding, quote, whether the U.S. Will meet us at a meeting room or encounter us in a nuclear showdown is entirely dependent on the decision of the U.S. Pretty clear both sides are hedging bets on a possible summit coming up on June 12th and there's never been a meeting like this before but we have seen these kinds of maneuvers from the north Koreans before, both destruction of sites and these kind of threats. Reporter: That's right. We've seen this movie. We know how it ends. North Korea has played this game before many times and that is why previous presidents have been so wary, so reluctant to engage in direct talks but president trump just jumped at the chance for a high-profile meeting with Kim. Talk of a Nobel peace prize. He's had second thoughts recently saying no summit might even take place, George. Lots of maneuvering. To the white house where

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