US President Donald Trump said Wednesday that he has ordered the Pentagon to resume nuclear weapons testing, an announcement made in a frighteningly vague social media post that threatens to shred decades of global progress and heighten tensions with China and Russia .

Trump mentioned both of those nations in his post, which was published to Truth Social just ahead of the US president’s meeting with his Chinese counterpart, Xi Jinping.

“The United States has more Nuclear Weapons than any other country,” Trump wrote, inaccurately . “Because of other countries testing programs, I have instructed the Department of War to start testing our Nuclear Weapons on an equal basis.”

Experts and nuclear nonproliferation advocates quickly began trying to parse Trump’s statement and

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