World's nuclear-armed nations upgrading their arsenals, says SIPRI

Clear indications that reductions since the end of the Cold War have ended

The world’s nuclear-armed nations are set to boost their arsenals in the next decade, even as the number of such weapons fell last year, according to a report from the Stockholm International Peace Research Institute, or SIPRI.

“All of the nuclear-armed states are increasing or upgrading their arsenals and most are sharpening nuclear rhetoric and the role nuclear weapons play in their military strategies,” Wilfred Wan, Director of SIPRI’s Weapons of Mass Destruction Programme, said in a statement on Monday.

That development could reverse a decades-long trend of reduced nuclear stockpiles. By the start of 2022, the global inventory of warheads had