China has said it adheres to its international obligations on nuclear weapons after U.S. President Donald Trump said Beijing is one of several powers that have conducted secret testing of them.

Why it Matters

Last week, Trump announced on social media that he had ordered the Department of Defense to immediately begin testing nuclear weapons , as Russia and China—the key nuclear rivals of the U.S.—have continued testing their respective arsenals. A U.S. resumption of the testing of nuclear weapons would be a serious escalation of the unfolding arms race and a break with decades-old international commitments.

While Trump has not spelled out exactly what he means by his announcement last week, Energy Secretary Chris Wright later clarified that the tests will not include actual det

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