China expands nuclear warhead stockpile to 620, SIPRI reports
SIPRI's 2026 annual report shows China's nuclear warhead stockpile reached 620 as of January 2026, up from 600 a year earlier, marking the fastest expansion of any nuclear-armed state. The nine nuclear powers possessed 12,187 warheads globally, with 4,012 deployed and up to 2,200 on high alert.