But a UN internal report shockingly found that South Korea had violated the UN Security Council resolution by allowing two ships carrying North Korean coal into the country.
In addition, the document signed by Kim and Trump on June 12 in Singapore stipulated that the USA was also committed to guarantee the security of the North Korean regime. It may take some time to get where we need to go. "We have no speed limit", the United States president told reporters.
Kim Hong-gul spoke to reporters at Beijing Airport on Thursday after returning from a 4-day trip to North Korea.
Trump noted Wednesday that there is "no rush" and that sanctions against the regime are still in place. The hostages are back. There have been no tests.
Pompeo's remarks followed the tone set by Trump earlier this week, when the president said "we have no time limit" since the North hasn't test-fired a missile in almost eight months.
Trump also said he elicited a promise from Russian President Vladimir Putin in their Helsinki meeting this week to help negotiate with North Korea, but did not say how.
"While trying to win the people's heart, Kim would want to show that he's making an all-out effort on the economy and he really means it, and defuse suspicions about denuclearization", said Lee Woo-young, a professor at the University of North Korean Studies in Seoul.
Trump threatens tariffs on all US$505 billion of Chinese imports
Chinese imports from the USA totaled $205 billion in the first five months of 2018, with the deficit reaching $152 billion. The Fed hiked interest rates twice this year, and plans to raise them two more times by the end of 2018.
North Korean cargoes were carried from Wonsan and Chongjin to Kholmsk between July and September previous year on six occasions.
However, Trump last week signaled optimism, unveiling a letter from Kim in which the young leader hailed the "start of a meaningful journey" and tweeting "Great progress being made!"
Earlier in June, US broadcaster NBC News reported that US intelligence agencies believed North Korea continued producing fuel for its nuclear programme.
Meanwhile, a senior U.S. defence official said the United States hopes North Korea will return the remains of about 50 American Korean war dead within two weeks, the first of thousands Trump said Pyongyang promised to hand over.
The repatriation of remains of soldiers killed in the Korean War was one of the agreements reached during the June 12 summit between Trump and North Korean leader Kim Jong Un in Singapore.
"The economic status in Hamgyong area was very bad, according to my sources within North Korea", said Kim Seung-cheol, a defector who heads the NK Reform Radio station in Seoul, referencing an area near the border with China.