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Experts fear that if Trump scraps the agreement with the Islamic Republic, Kim will have no reason to give up his own devastating nuclear arsenal.

German foreign minister, Sigmar Gabriel, warned that abandoning the deal with Tehran could force tyrant Kim to horde his H-bombs ahead of a do-or-die clash with The West.

He said: "Our big concern is, with regard to North Korea, that it is very unlikely the North Korean dictatorship is ready to agree to an international agreement to renounce the building of nuclear weapons if the only agreement in the world that has allowed such a renunciation is at the same time called into question."

The call comes after the US President threatened to use military force to crush the regime, cryptically tweeting "only one thing will work".

(Image: GETTY)

(Image: GETTY)

Trump has repeatedly threatened to unleash World War 3 fury on North Korea and dismissed talks with Pyongyang as being a waste of time.

On Monday he tweeted: "Our country has been unsuccessfully dealing with North Korea for 25 years, giving billions of dollars and getting nothing. Policy didn't work."

But, in a stunning admission, US Secretary of State, Rex Tillerson, said Washington was keeping lines of communication open with North Korean officials.

Scrapping the Iran deal could, however, permanently eliminate any hopes that the North will give up its nukes.

(Image: GETTY) (Image: GETTY)

During the presidential campaign, Trump promised to back out of the deal brokered by Barack Obama.

Russia also waded in to warn Washington to back down over the growing crisis in North Korea – branding the tensions as "unacceptable".

Putin's top diplomate Sergey Lavrov told Tillerson that "restraint" was needed to avoid a massive conflict on the Korean Peninsula.