What do the latest reports say?
The Ryongjong fish is a species native to North Korea from Ryongjong County.
The factory outside Pyongyang in Sanumdong where the work is underway produced the North's first ICBMs capable of reaching the United States.
In his response, Kim Yong-nam reportedly conveyed his government's appreciation to President Jokowi on the invitation and said he would soon present it to leader Kim Jong-un.
Monday's report, citing intelligence gathered by USA spy agencies and unidentified officials, also said there were signs that North Korea is continuing to construct at least one, and possibly two, liquid-fueled intercontinental ballistic missiles (ICBMs) capable of reaching the United States.
Photos and infrared imaging indicate vehicles moving in and out of the facility at Sanumdong, the official told Reuters on condition of anonymity because the intelligence is classified. They believe North Korea is building at least one of its Hwasong-15 missiles there. It also provides a commercial satellite image, taken on July 7, showing the factory in question.More news: Weather warning issued for thunderstorms
A truck and trailer similar to ones used in the past to move missiles was seen in one satellite photo, said the official.
"Offer up 20 first-gen warheads, claim you are or have disarmed, but keep the good stuff in presumably clandestine facilities and hope they aren't discovered", Narang said.
So we got our hostages back, but they've blown up one of their sites, one of their testing sites, their primary testing site, in fact some people say their only testing site, they are getting rid of a missile, which isn't in the document, that was done afterwards, they're getting rid of a missile testing site - they're doing so much now.
U.S. Secretary of State Mike Pompeo told the U.S. Senate Foreign Relations Committee last week that North Korea continues to "produce fissile material" used in making nuclear weapons. It has in the past two years quickly advanced its nuclear programme.
He charges that coverage does not reflect evidence on covert facilities, "but rather deep suspicions of North Korean intentions within the intelligence community that have been fed to the media by individuals within the administration who are unhappy with the direction of the president's North Korea policy following the Singapore Summit".
This indicated that there had not been a complete stop in activity during the summit talks.
Besides reducing the amount of troops and weapons they are armed with, McBride said talks about the disputed sea border between North and South Korea could also be on the agenda.