Nine nuclear-armed nations including the US, Russia, France, China, India and Pakistan, continued to modernise their nuclear arsenals and several of them deployed new nuclear-capable weapon systems in 2023, a Swedish think-tank said on Monday.
In its analysis, the Stockholm International Peace Research Institute (SIPRI) said China's nuclear arsenal increased from 410 warheads in January 2023 to 500 in January 2024, and it is expected to keep growing.