Boiling the diplomatic standoff down to North Korea's deepening feeling of mistrust, Ri Yong Ho sought to lay out a vision of peace on the troubled Korean Peninsula - provided North Korea gets what it wants from the United States.
Before they turned the page on decades of public acrimony, the leaders regularly traded threats and insults as North Korea pushed to develop a nuclear missile capable of hitting the United States.
North Korea, however, doesn't "see any corresponding response" from Washington.
"The U.S. insists on the "denuclearization-first" and increases the level of pressure by sanctions to achieve their goal in a coercive manner, and even objecting to the 'declaration of the end of war, '" Ri said.
Kim expressed an openness to denuclearizing during a summit with South Korean President Moon Jae In last week, but indicated North Korea would only do so if the USA took undefined "corresponding measures".
Mr Trump also pre-empted media criticism of his praise for Mr Kim.
China and Russian Federation argued that the UN Security Council should reward Pyongyang for steps taken.
Ri says it's a "pipe dream" that continued sanctions and U.S. objection to a declaration ending the Korean War will ever bring the North to its knees.
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"The recent dramatic improvement of the North-South relations and the atmosphere of cooperation clearly show how decisive the role of trust building can be", he said.
United States President Donald Trump took his enthusiasm for his detente with North Korean leader Kim Jong Un to new heights, declaring at a rally with supporters that "we fell in love" after exchanging letters.
This comment comes just days after the US President flaunted his relationship with Kim after receiving another "extraordinary letter" from Pyongyang.
"However, we do not see any corresponding response from the USA", he added.
"The US insists on the "denuclearisation-first" and increases the level of pressure by sanctions to achieve their objective in a coercive manner, and even objecting to the 'declaration of the end of war, '" Mr Ri said.
Pyongyang has also made clear that they are looking for a formal declaration to the end of the Korean War.
"And then we fell in love", Trump said. "And we would go back and forth", Trump told a rally in West Virginia.
He added: "President Trump has made abundantly clear that if Chairman Kim follows through on his commitments, a much brighter future lies ahead for North Korea and its people, and the United States will be at the forefront of facilitating that bright future".