The meeting will build on the Singapore declaration between the two sides, agreed to in June 2018.

These are the core documents and statements at the center of the U.S.-North Korea diplomatic process in early 2019.

The United States’ relationship with North Korea is long overdue for a diplomatic upgrade.

Diplomacy between the United States and North Korea will continue at a working level.

Washington and Pyongyang remain at loggerheads over which should come first: denuclearization or a peace agreement.

The meeting marks the highest level contact between the two countries since the Singapore Summit in June.

The harm to American interests as a direct result of the Trump-Kim meeting may prove to be quite significant indeed.

The United States should do away with a ban on travel by its citizens to North Korea.

If there was ever a real chance for the near-term denuclearization of North Korea, its momentum has halted.

Trump is letting America down by focusing on looking good rather than doing what is actually good.

North Korean production of at least one Hwasong-15 ICBM has been detected by U.S. intelligence agencies.

North Korea's dismantlement of a missile engine test stand has begun, but is easily reversible, U.S. intelligence finds.

What can be said about North Korea following through with a seeming concession out of the Singapore summit?

The no-show is a well-worn North Korean negotiating tactic, but this time, it highlights growing discord in talks.

Leave unilateral disarmament at the door, North Korea tells the United States.

Despite the optimism after the Trump-Kim summit, it's difficult to imagine Pyongyang ever giving up nuclear weapons.