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(Tingshu Wang/Reuters)

U.S. accuses China of secretive nuclear test as arms-control agreements lapse

 What to know

U.S. arms official Thomas DiNanno accused China of conducting a secret nuclear test in 2020, claiming Russia aided in developing fissile material. This accusation follows President Donald Trump’s decision to not renew the New START accord. China denies the test, citing a moratorium on nuclear testing. Efforts to include China in a new arms agreement face challenges due to strained U.S.-China relations.

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