China secretly expanding nuclear arsenal 800 km from Arunachal

China is secretly expanding its nuclear weapons infrastructure deep inside mountains of Sichuan province, around 800 kilometres from Arunachal Pradesh. Satellite imagery analysed by experts and reported by The New York Times shows rapid expansion at secretive nuclear-related facilities that appear linked to warhead production and testing. China is on track to reach over 1,000 warheads by 2030.