The country’s Korean Central News Agency (KCNA) released pictures showing scientists leaving Pyongyang after a stay in the capital.
In astonishing scenes thousands lined the streets to wave off weapons experts, as they were driven away in a massive convoy of coaches yesterday.
It comes as North Korea reacted with fury over the United Nations’ Security Council voting unanimously to step up sanctions against the rogue state, imposing a ban on the country’s textile exports and capping imports of crude oil in response to its sixth nuclear test on September 3.
It was the ninth sanctions resolution unanimously adopted by the 15-member council since 2006 over North Korea’s ballistic missile and nuclear programs.
US ambassador to the UN Nikki Haley told the council after the vote: “The North Korean regime has not yet passed the point of no return.

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“If it agrees to stop its nuclear programme, it can reclaim its future … If North Korea continues its dangerous path, we will continue with further pressure.”
After the announcement, Japan and South Korea said they are prepared to put more pressure if the rouge state refused to end its aggressive development of nuclear weapons and ballistic missiles.
But defiant North Korea has “categorically rejected” the resolution, warning the US it would soon face the “greatest pain” it had ever experienced.
North Korean Ambassador Han Tae Song told a conference today: “My delegation condemns in the strongest terms and categorically rejects the latest illegal and unlawful U.N. Security Council resolution.
“The forthcoming measures by DPRK will make the US suffer the greatest pain it ever experienced in its history.”
He said North Korea’s ruling party the Democratic People’s Republic of Korea (DPRK) was “ready to use a form of ultimate means”.
There are now fears Kim Jong-un could respond to the new sanctions with another missile launch or nuclear bomb, as North Korea has previously threatened the US will pay a “due price” for levying sanctions against them.
The foreign ministry said in statement on Monday: “The world will witness how the DPRK tames the US gangsters by taking a series of actions tougher than they have ever envisaged.”
However, China’s UN Ambassador Liu Jieyi has called on North Korea to “take seriously the expectations and will of the international community” and stop its nuclear and ballistic missile development.
China and Russia have proposed a dual suspension of the rouge state’s nuclear and missile testing, and US and South Korean military exercises.
Russian UN Ambassador Vassily Nebenzia told the Security Council: “We think it’s a big mistake to underestimate this Russia, China initiative.
“It remains on the table at the Security Council, and we will insist on it being considered.”
US President Donald Trump has also promised to not allow North Korea to develop nuclear missiles able to reach the US.