Based upon Trump's history on social media, Meyers was even surprised by the president's latest move.
"According to the Washington Post, North Korea now has the ability to fit miniature nuclear warhead on missiles that are capable of reaching North America," he said. "Well don't just stand there, tweet something!"
But the one time the president actually opened his mouth instead of moving his fingers, he threatened the Asian country. "That outta cool things down," Meyers joked.
"God forbid Trump's ever put in charge of a hostage situation," he said as he imagined the president talking into a bullhorn. "Kill a hostage? You don't have the balls. Plus, if you do, I'll kill everyone outside the bank."
"As you can see, the vacation is really relaxing him," Kimmel said in reference to North Korea during his monologue. "Listen, we're sorry we made fun of you. Go back to golfing before you kill all of us."
But he has hope -- sarcastic hope, but hope nonetheless.
"Heres the thing, Donald Trump and Kim Jong Un both seem like reasonable men. I'm sure everything will work out fine," Kimmel said.
O'Brien on the other hand turned the concerning international affairs issue into a joke about Trump's sex life.
"Today, President Trump warned that if North Korea does not stop escalating its nuclear program, quote, 'They'll be be met with fire and fury like the world has never seen,'" he said. "Then Melania said, 'Don't worry, he says that to me every night and nothing ever happens.'"