State media has given few details on Thursday's reported test of a new "tactical guided weapon", but analysts say it is unlikely to be a return to the long-range missile tests seen as a threat to the US.
North Korean leader Kim Jong-un will visit Russian Federation later this month, the Kremlin said Thursday, in a meeting that offers President Vladimir Putin an opportunity to emerge as a broker in the long-running nuclear standoff and raise Russia's profile in regional affairs.
"I am afraid that, if Pompeo engages in the talks again, the table will be lousy once again and the talks will become entangled", the official KCNA news agency quoted Kwon Jong Gun, director general of the ministry's Department of American Affairs, as saying.
Even though North Korea's latest test is not likely a ballistic missile, it is still meant to send a message to Trump, said Vipin Narang, a nuclear expert and professor at the Massachusetts Institute of Technology.
It was not immediately clear what type of weapon the North Koreans fired, but experts said the description of a tactical weapon, with guided flight, capable of carrying a powerful warhead and fired at a variety of targets, suggested a short-range missile rather a longer-range ballistic missile, meaning the move would not violate North Korea's self-declared moratorium on testing.
The meeting between the Cold War allies comes at a delicate moment in the nuclear negotiations between North Korea and the United States, which have stalled since the last round of talks in Hanoi fell apart earlier this year.
But the fact that it was not a long-range missile or nuclear test "underscores Pyongyang wants to keep alive dialogue with Washington", he added.
Kwon also said the two leaders were on good terms.
In a worrying development, Kim Jong-un's regime claims it has completed its first public weapons test since February's agreement in Hanoi, Vietnam ended with no agreement.
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A White House official said: "We are aware of the report and have no further comment".
North Korea has since said it is mulling options for its diplomacy with the USA, and Kim said last week he was open to talks with Trump only if Washington came with the "proper attitude".
Kim Jong Un called the missile launch an "event of very weighty significance".
"Tactical weapons are for attacking South Korea, not the U.S.", Park Hwee Rhak, a political scientist at Kookmin University in Seoul, and a former South Korean army colonel, commented in a phone interview. That did not happen, the official said.
The demand follows the test of an unspecified "tactical guided weapon" in the communist country on Wednesday and a belligerent speech by dictator Kim Jong-un asserting that "one thousand talks" with American officials could not deter his regime from continuing its illegal nuclear weapons program while demanding relief from sanctions created to end that program.
North Korea's Kwon blasted the top U.S. diplomat for making "reckless remarks" and "fabricating stories like a fiction writer".
Moscow maintained close ties with Pyongyang during the Soviet era, building dozens of factories and key infrastructure, sending supplies and providing weapons for the North Korean military.
Meanwhile, commercial satellite photos from last week showed increased activity at North Korea's main nuclear site, according to a US research organization.