The spokesman claimed it was still not clear what Trump meant by "war games".
Its view was echoed by the conservative opposition Liberty Korea Party, whose leader Hong Joon-Pyo castigated the summit as a "great failure".
Actually, concerns about North Korean missiles and nuclear weapons reached a peak last year, during Trump's first year in office, as the North conducted more tests and Trump and Kim aimed ever more fiery rhetoric at each other.
While no guarantees were produced at the summit over how or when Pyongyang would disarm, U.S. secretary of state Mike Pompeo warned that the USA would resume military exercises with South Korea if the North stops negotiating in good faith.
Senator Chris Van Hollen, also a Democrat, said of Trump's tweet about North Korea no longer presenting a threat: "This is truly delusional".
"The strength of this agreement will only be as good as the verification process that North Korea allows". The headline reads, "A summit meeting of the century that pioneered a new history in DPRK-US relations", with a subheadline of "A joint statement adopted".
The tweet followed a New York Times story on the Trump administration's lack of scientific expertise, the president's questioning of the honesty of the American media at an global summit in Canada and his dismissal of diplomatic expertise in favor of using a "touch" and "feel" approach in his talks with Kim. Trump was giving denuclearisation on the Korean peninsula "a red-hot go".
E3 2018: The Elder Scrolls returns to mobile with ambitious RPG Blades
Howard was insistent that the game will be fully playable offline, but he also said that "every surviving human is a real player". At its heart, " Blades " at its heart is a pure Elder Scrolls game, the company said when it announced the title.
Mike Pompeo, the USA secretary of state, has landed at Osan Air Base south of Seoul and is now due to have meetings with America's allies in the aftermath of the summit. So a Trump deal presumably would not only eliminate North Korea's current nuclear warheads, which are estimated to be at about 60, but prohibit further production forever - and end Pyongyang's militaristic programs like providing weapons to Syria and its horrific violations of human rights.
"Kim Jong Un and Trump had the shared recognition to the effect that it is important to abide by the principle of step-by-step and simultaneous action in achieving peace, stability and denuclearization of the Korean Peninsula", KCNA reported.
Mr Pompeo will then fly to Beijing to update the Chinese government on the talks.
In Japan, the prospect of canceled U.S.
He is expected to meet privately with General Vincent Brooks, commander of US Forces Korea.
"It is up to the US and South Korea to decide about their joint exercises".
Seoul and Washington had long insisted that their joint military drills were strictly defensive.