"While a possible new avenue to peace now exists with North Korea, we remain vigilant regarding pursuit of nuclear weapons anywhere in the world", Mattis said, speaking at a U.S. Naval War College graduation. "We're getting the remains".
"How can Kim love his people if he's killing them?" the reporter asked Trump.
According to Trump, the two leaders privately discussed human rights and Kim reacted "very well".
The U.S. offered certain security assurances, including the suspension of joint military exercises with South Korea, in exchange for a commitment from Kim to the complete denuclearization of the Korean Peninsula. "He's the head of a country. Don't let anyone think anything different", Trump continued.
North Korean dictator Kim Jong Un agreed during the summit in Singapore on Tuesday, Trump said, to immediately begin returning troops who went missing in action during the Korean War from 1950 to 1953.
"You know why? Because I don't want to see a nuclear weapon destroy you and your family", Trump responded.
"President Trump, while you have Kim Jong Un's attention, use it to free North Koreans".
Jason Day among stars having US Open shockers
The Offaly man finished second in the 2016 edition, and started on the back nine today with a par and a dropped shot. I hit two bad putts on one and two, and for most of the day I just didn't putt well.
"Uhhh, could happen. I mean, yeah, I would have him".
"I'm kidding", he said. "I gave him a very direct number". He can now call me if he has any difficulty. "I call them war games", he said.
Experts were concerned the moment could be used in North Korea's propaganda, but Mr Trump said he was showing respect to the general. "They thought Trump was going to get in, he's going to start throwing bombs all over the place".
Joint military drills between South Korea and the USA are a sore point with the North, which views them as rehearsals for invasion. We are afraid to sing, say, wear, or think what we want. Point after point, he said. "He met. It's terrible".
Trump answered a question Wednesday on Fox about abuses carried out under Kim by saying that "a lot of other people done some really bad things".
President Donald Trump during the summit with North Korea in Singapore on June 12, 2018. He said he would stop the drills as long as denuclearization talks continue in good faith.