President Trump said he had a "really productive time" during discussions with North Korean leader Kim.
But he added it "wasn't a thing to be signing anything" today.
"He's quite a guy, quite a character," Trump said of Kim. "We had some options but at this time we decided not to do any of the options."
"Sometimes you have to walk," the President added. "This was just one of those times."
Watch below: Trump, Pompeo discuss why the summit ended