[As shown by the fresh SIPRI report](https://www.sipri.org/media/press-release/2025/nuclear-risks-growth-new-arms-race-looms-new-sipri-yearbook-out-now) (Stockholm global Peace investigation Institute) Almost all nuclear-weapon countries are actively upgrading and developing their capabilities in this area. 9614 warheads were in military supplies for possible use, and about 2100 of them were kept in advanced operational readiness. The vast majority belonged to Russia and the USA.
