FILE PHOTO: U.S. President Donald Trump and North Korea's leader Kim Jong Un meet at the start of their summit at the Capella Hotel on the resort island of Sentosa, Singapore June 12, 2018.
A spokesman for South Korean President Moon Jae-in made the announcement ahead of Moon's trip to Europe next week, where he will visit the Vatican and extend Kim's invitation to Pope Francis in person.
"I'd love to remove them, but we have to get something for doing it", Trump said.
'Now, we haven't removed sanctions, as you know.
Pompeo's retort came after Chinese Foreign Minister Wang Yi accused the USA on Monday of escalating trade disputes, interfering on Taiwan and meddling in the country's domestic affairs. Kim Yong Chol also made clear that Pompeo's preferred translator wouldn't be allowed, and his bodyguard would have to leave his weapon behind, according to a pool reporter traveling with Pompeo. Washington and Beijing "should and must make the correct choices", Yang said.
North Korea and the Vatican have no formal diplomatic relations.
Kim Jong-un and Mr Pompeo held talks about President Trump's plans and future relations with North Korea. He said that Kim invited inspectors to the Punggye-ri test facility, the site of all six of the regime's nuclear blasts.
North Korea's official name is the Democratic People's Republic of Korea or DPRK.
Mr Kim's invitation will be formally delivered by President Moon of South Korea when he visits the Vatican.
He briefed Wang on his visit to the Democratic People's Republic of Korea (DPRK), voiced the US side's appreciation of China's consistent position on the Korean Peninsula and its efforts on denuclearization, and expressed a willingness to continue related cooperation.
Russian, Chinese, and North Korean officials are now meeting in Moscow to discuss denuclearization and North Korea's diplomatic opening to South Korea.
North Korea's state-run news agency KCNA, meanwhile, said Monday that Kim had "expressed his will and conviction that a great progress would surely be made in solving the issues of utmost concern of the world".
Trump said "eventually we're going to have lots of meetings on United States soil and on their soil by the way".
KCNA said "there was an agreement on the issue of holding the working negotiation for the second DPRK-U.S. summit talks as early as possible, and relevant procedure-related issues and ways were also discussed".
Things didn't go much better a day later in Beijing, where Pompeo had the bad fortune of being the first senior US official to visit the country since a blistering speech on China last week from Pence.
The unprecedented summit served as a platform for the two leaders to discuss denuclearising the Korean peninsula.