In a dramatic policy shift, U.S. President Donald Trump has directed the Pentagon to resume nuclear weapons testing for the first time since 1992. Citing the need to keep pace with rival powers like Russia and China, Trump announced the decision on social media ahead of his meeting with Chinese President Xi Jinping in South Korea. He claimed the U.S. nuclear arsenal remains the largest and most advanced in the world, followed by Russia and then China, which he described as “far behind.” The United States halted nuclear testing in 1992 under President George H. W. Bush, marking the symbolic end of the Cold War era. However, Trump emphasized that he had already modernized America’s nuclear stockpile during his first term, arguing that the decision to resume testing was unavoidable despite acknowledging the “immense destructive power” of such weapons. Trump’s announcement came shortly after he criticized Russia for testing a nuclear-powered missile, signaling a stark reversal from long-standing U.S. policy. Warning that China could achieve nuclear parity within five years, Trump said the testing process would begin “immediately,” though he provided no operational details. The Nevada Test Site, where the last U.S. test was conducted, remains under government control.