Deadlocked denuclearization talks between Pyongyang and Washington are expected to again weigh heavily on U.S. President Donald Trump's mind after North Korean leader Kim Jong Un offered up a flurry of seemingly tantalizing proposals Wednesday.

The North agreed to "permanently" decommission a key missile facility under the watch of "experts from relevant countries" and said it is willing to close its main Nyongbyon nuclear complex if the United States takes commensurate actions, South Korean President Moon Jae-in said after a summit in Pyongyang with North leader Kim Jong Un.

At a news conference after the summit talks, the pair said they had agreed to turn the Korean Peninsula into a "land of peace without nuclear weapons and nuclear threats" and take "prompt steps" toward that goal.