Two years after the much-heralded first summit between President Trump and Kim Jong un, North Korea has said there is no benefit in maintaining a relationship.

US policies prove Washington remains a long-term threat to the North Korean state and its people, Foreign Minister Ri Son Gwon said in a statement carried by state news agency KCNA.

The Singapore summit in June 2018 represented the first time a sitting American president met with a North Korean leader, but the statement that came out of the meeting was light on specifics, opting instead for general commitments, he said.

A second summit in February 2019 in Vietnam’s capital Hanoi, failed to reach a deal because of conflicts over US calls for North Korea to completely give up its nuclear weapons, and North Korean demands for sanctions relief, KCNA reports.

Ri said with hindsight the Trump administration appears to have been focusing on only scoring political points while seeking to isolate and suffocate North Korea, and threatening it with preemptive nuclear strikes and regime change.

“Never again will we provide the US chief executive with another package to be used for achievements without receiving any returns,” he said. “Nothing is more hypocritical than an empty promise.”

On Thursday North Korea criticized the United States for commenting on inter-Korean affairs, and said Washington should stay quiet if it wants the upcoming presidential election to go smoothly.

Ri said North Korea’s desire to open a new cooperative era runs deep as ever, but that the situation on the Korean peninsula is daily taking a turn for the worse.

“The US professes to be an advocate for improved relations with the DPRK, but in fact, it is hell-bent on only exacerbating the situation,” Ri said.

North Korea will continue to build up its military forces to cope with the threats from the United States, he added.