China's Covert Nuclear Build-Up: Secret Infrastructure Expansion in Sichuan

CNN's investigation uncovers China's secret expansion of nuclear weapons infrastructure in Sichuan since 2021, evidenced by satellite images of new facilities like a Tic Tac dome. The scale suggests the most significant modernization in decades, coinciding with the end of New START and ahead of Trump's Beijing trip. US allegations of nuclear test violations are denied by China, which maintains a self-defense policy. Experts caution that this could trigger a complex new arms race and lead to overestimation of capabilities by the US.