North Korea on Sunday stated it's running out of endurance with the United States over what is defined as hostile policies and unilateral disarmament hassles, and warned that a close personal relationship between the leaders alone wouldn't be sufficient to prevent nuclear diplomacy from disrupting.

In a statement printed by Pyongyang's official Korean Central News Agency, senior North Korean official Kim Yong Chol stated there had been no substantial development in relations despite warm connections between leader Kim Jong Un and President Donald Trump. He stated the persisting hostility means "there can be the interchange of fire at any moment."

Kim Yong Chol Stated the Trump administration would be "seriously wrong" if it ignores an end-of-year deadline fixed by Kim Jong Un to propose jointly acceptable terms for a deal to salvage nuclear discussions.

The North delivered a similar statement on Thursday that was credited to veteran diplomat Kim Kye Gwan. He condemned U.S. officials for maintaining "Cold War mentality and ideological prejudice" and insisted the United States to act "sensibly" through the end of the year.

"My faith is that the diplomatic adage that there is neither everlasting foe nor permanent friend does not alter into the one that there is a permanent foe but no permanent friend," Kim Yong Chol Stated, emphasizing that the United States would be unsuccessful if this attempts to apply the "close secret relations" between Trump and Kim for suspending tactics.

He Stated the United States was getting on North Korea's concerns by demanding its "final and fully verified denuclearization" while insisting other U.N. countries to strengthen agreements and pressure on the North.