-
Now Playing: Fate of the Korea Summit
-
Now Playing: Trump cancels North Korea summit
-
Now Playing: New details emerge from surprise meeting of Korean leaders
-
Now Playing: South Korean president diffuses 'difficulties' with North Korea
-
Now Playing: American citizen and his wife freed from captivity in Venezuela
-
Now Playing: Defense secretary says 'possibly some good news' on Korean summit
-
Now Playing: Tubas, robots and lasers: Norway festival celebrates the sonic arts
-
Now Playing: South Koreans expect US-North Korea summit to take place 'eventually'
-
Now Playing: Explosion injures 15 at Toronto restaurant
-
Now Playing: North Korea reacts to canceled US summit
-
Now Playing: North Korea blows up nuclear tunnels
-
Now Playing: Trump cancels summit, pointing to NK's 'anger and open hostility'
-
Now Playing: Video purports to show demolition of North Korean nuclear site
-
Now Playing: Irish citizens living abroad fly home to vote in abortion referendum
-
Now Playing: North Korea issues threat amid summit jitters
-
Now Playing: 'Ice Runner': Running across the world's deepest lake
-
Now Playing: New images of the Honduras plane crash surfaced
-
Now Playing: Daughter of poisoned Russian spy speaks out after horrific attack