US Accuses China of Secret Nuclear Test in 2020, Urges Broader Arms Treaty

• The US accused China of conducting a secret nuclear test on June 22, 2020, using 'decoupling' to hide activities.
• US Under Secretary of State Thomas DiNanno stated China prepared for tests with yields in the hundreds of tons.
• China's ambassador Shen Jian denied the accusations, calling them 'false narratives' and blaming the US for an arms race.
• The Comprehensive Nuclear Test Ban Treaty (CTBT) head, Robert Floyd, stated no event consistent with a nuclear test was detected.
• The accusations come after the New START treaty expired, with the US pushing for a new treaty including China and Russia.