-
Now Playing: When is Kim Jong Un coming to the White House?
-
Now Playing: Trump explains what happened at the G7 summit
-
Now Playing: 'I do trust him:' Trump says of Kim Jong Un
-
Now Playing: Trump says Kim Jong Un's country loves him
-
Now Playing: South Koreans hope for peace
-
Now Playing: Trump insists on stopping the 'war games'
-
Now Playing: Trump clarifies whether North Korea will denuclearize
-
Now Playing: Trump describes 'special bond' he's formed with Kim Jong Un
-
Now Playing: 'It's rough over there:' Trump says, describing North Korea
-
Now Playing: President Donald Trump opens up about historic summit in exclusive interview
-
Now Playing: Trump, Kim Jong Un sign undisclosed 'important' document
-
Now Playing: Trump calls Kim Jong Un 'a worthy negotiator'
-
Now Playing: Former Trump homeland security adviser talks North Korea meeting
-
Now Playing: Trump, Kim Jong Un sign unspecified document at historic summit
-
Now Playing: Trump says meeting with Kim Jong Un was 'top of the line'
-
Now Playing: Trump, Kim Jong Un sit down for their lunch
-
Now Playing: Trump, Kim Jong Un hold historic meeting in Singapore
-
Now Playing: Koreans 'would never have imagined' image of Trump, Kim Jong Un together
-
Now Playing: Trump, Kim Jong Un walk to eat lunch
-
Now Playing: Korean war vets' reflections on Trump meeting Kim Jong Un