Theresa May is belived to have urged caution over Trump's warnings to North Korea
The Prime Minister has reportedly spoken to the President in private, and advised him to hold fire on launching missiles at the rogue state.
The Trump administration has adopted an aggressive stance towards Kim Jong-un, warning him to end his nuclear missile programme or face serious consequences.
The recent US strikes on a Syrian airbase and the dropping of the 'mother of all bombs' on an ISIS cave network in Afghanistan have put Washington on a collision course with Pyongyang, with both sides refusing to back down.
But Whitehall has apparently urged caution over preemptive strikes, saying the world could face a catastrophic reaction if the US failed to wipe out Kim's arsenal in one foul swoop.
A Government source told The Sun: "We've been here before.
“North Korea is something we must watch, but not to get overly excited about.
"We are urging restraint on military action.”
Mike Pence has continued the US rhetoric over North Korea during his visit to Seoul
US vice president Mike Pence is currently in South Korea, as part of an official tour of Asia.
He used a visit to the country's demiliterised border with North Korea to reiterate the White House's previous warning to the secretive state.
Referring to Trump's recent interventions in Syria, the vice president said: "North Korea would do well not to test his [Trump's] resolve".
He again stated the US 'immutable' commitment to its ally South Korea and warned that "all options are on the table" when it comes to thwarting Kim Jong-un's nuclear capability.
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