President Trump and the leader of North Korea, Kim Jong un, have traded insults publicly, with the latest juvenile interaction suggesting that a mutually acceptable solution to North Korea's nuclear weapons programme is still some way off.
Earlier in the day, Kim lashed out at Trump in statement and called him a "dotard", meaning very old person.
Donald Trump has finally arrived at the last stop on his 12-day Asia visit, so of course North Korea made a decision to fuck with him a little bit.
Trump is now in Vietnam attending the Asia-Pacific Economic Cooperation summit, but he took the time to tweet: "Why would Kim Jong-un insult me by calling me 'old, ' when I would NEVER call him 'short and fat?'".
Trump told an audience of CEOs at the Asia-Pacific Economic Cooperation summit in Danang, Vietnam, that the region's future "must not be held hostage to a dictator's twisted fantasies of violent conquest and nuclear blackmail".
Kim's regime has continued to carry out nuclear and ballistic missile tests despite widespread global condemnation and a series of crippling sanctions aimed at strangling the state's cash sources.
Why would Kim Jong-un insult me by calling me "old", when I would NEVER call him "short and fat?"
During his trip to Asia, Trump attempted a symbolic stare-down of Kim this week at the heavily fortified border that separates North and South Korea.
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"The weapons you are acquiring are not making you safer, they are putting your regime in grave danger", Trump said about North Korea during an address at South Korea's National Assembly in Seoul.
"I say to the North: Do not underestimate us, and do not try us", he said.
"Every step you take down this dark path increases the peril you face".
"Strange things happen in life".
Asked at news conference with Vietnam's president later Sunday if he could become friends with the North Korean leader, Trump replied it "might be a odd thing to happen but it's certainly a possibility".
Is this politics? I don't even know anymore, maybe it is.
Mr Trump also urged other nations to join forces to combat the growing threat posed by Pyongyang.
In recent months, North Korea has tested intercontinental ballistic missiles that could reach the United States mainland with further development and has conducted its most powerful nuclear test.