North Korean leader Kim Jong Un has not yet revealed his "final judgment" about the fate of his country's negotiations with the U.S., but President Donald Trump would be wise to stop offending him in the meantime, a senior official warned on Monday.

The statement, from Ri Su Yong, one of the highest-ranked members the ruling Workers' Party — Ri oversees the party's foreign policy decisions — was the second response of the day from Pyongyang after Trump tweeted on Sunday that the DPRK has "everything" to lose if diplomacy fails.