President Donald Trump on Saturday lashed out at North Korean dictator Kim Jong-un after state-run media called him a “lunatic old man.”

North Korea also criticized Trump as a “warmonger” as the president toured Asia to drum up support against Pyongyang’s nuclear weapons program.

Trump also lashed out at the “haters and fools” who had criticized his meeting with Russian president Vladimir Putin. The two spoke together during the annual Asia-Pacific Economic Cooperation Economic Leaders’ Meeting in Vietnam.

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Trump faced a backlash after saying he believed Putin, who told him that Russia did not meddle in the 2016 U.S. presidential election.

Read Trump’s tweets below:

President Xi of China has stated that he is upping the sanctions against #NoKo. Said he wants them to denuclearize. Progress is being made. — Donald J. Trump (@realDonaldTrump) November 11, 2017

Will be doing a joint press conference in Hanoi, Vietnam then heading for final destination of trip, the Phillipines. — Donald J. Trump (@realDonaldTrump) November 11, 2017

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When will all the haters and fools out there realize that having a good relationship with Russia is a good thing, not a bad thing. There always playing politics – bad for our country. I want to solve North Korea, Syria, Ukraine, terrorism, and Russia can greatly help! — Donald J. Trump (@realDonaldTrump) November 12, 2017

Does the Fake News Media remember when Crooked Hillary Clinton, as Secretary of State, was begging Russia to be our friend with the misspelled reset button? Obama tried also, but he had zero chemistry with Putin. — Donald J. Trump (@realDonaldTrump) November 12, 2017

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Why would Kim Jong-un insult me by calling me "old," when I would NEVER call him "short and fat?" Oh well, I try so hard to be his friend – and maybe someday that will happen! — Donald J. Trump (@realDonaldTrump) November 12, 2017