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3w ago

U.S. Intelligence Says China Is Building Next-Generation Nuclear Arms, Cites 2020 Lop Nur Blast

The findings are fueling calls in Washington to reassess nuclear deterrence.

Image
A suspected nuclear weapons handling facility at the Lop Nur test site in China, seen on December 2, 2025
A member of the People's Liberation Army stands as the strategic strike group displays DF-61 nuclear missiles during a military parade to mark the 80th anniversary of the end of World War Two, in Beijing, China, on September 3, 2025.

Overview

  • Assessments detail pursuit of MIRV-capable, miniaturized warheads and first-time low-yield tactical options.
  • Assistant Secretary of State Christopher Yeaw said a June 22, 2020 event near Lop Nur registered magnitude 2.75 and matched an explosive signature.
  • Officials say China employed “decoupling” to dampen seismic signals, a technique that can hinder detection of small underground blasts.
  • Beijing rejects the accusations as unfounded political manipulation, and a Russian envoy has labeled the U.S. assertions groundless in comments tied to the CTBTO.
  • The disclosures have reignited debate over U.S. posture, with discussion of potential nuclear testing and concerns about scenarios involving a Taiwan conflict.