Presumptive US Republican presidential candidate Donald Trump says he is willing to meet North Korea's leader to discuss its nuclear programme.
"I would speak to him, I would have no problem speaking to him," the businessman said of Kim Jong-un.
Such a meeting would mark a significant change of US policy towards the politically isolated regime.
Democratic front-runner Hillary Clinton decried Mr Trump's "bizarre fascination with foreign strongmen".
The statement, delivered by one of her aides, added that Mr Trump's foreign policy "made no sense".
In a separate interview with Fox News, Mr Trump said he "absolutely had regrets" about his nine-month campaign, but that if had not conducted himself in the way he had, he would not have been successful.
The BBC has also learned that Mr Trump could visit the UK before the presidential election in November.
Diplomats expect his visit to the UK could happen after he formally becomes the Republican party candidate at a convention in July.
Earlier this week Mr Trump said "it looks like we're not going to have a very good relationship" with the UK.
British Prime Minister David Cameron and new London Mayor Sadiq Khan have harshly criticised Mr Trump's proposed ban on Muslims coming to the US.
Pressure on China
Mr Trump's comments about North Korea came in an interview with Reuters news agency late on Tuesday, in which he also expressed disapproval of Russian President Vladimir Putin's military actions in eastern Ukraine.
Mr Putin is a figure who Mr Trump has previously said he respects.