The stakes have never been higher in the Ukraine-Russia war. In the week that saw the conflict pass its 1000th day, Western powers substantially boosted Ukraine's military arsenal - and the Kremlin made its loudest threats yet of a nuclear strike.

The Russia-Ukraine war is escalating, with President Vladimir Putin amending the country’s nuclear doctrine. This has shone a light on Russia’s vast nuclear arsenal. Some estimate that Moscow has 5,580 nuclear warheads,

Russian President Vladimir Putin formally lowered the threshold for his country's use of nuclear weapons Tuesday, after the U.S. allowed Ukraine to strike inside Russia using American missiles.

Iran announced Friday it was activating new advanced centrifuges – which enrich uranium for the country’s nuclear program – after the United Nations’ nuclear watchdog criticized the country for not cooperating with the agency.

Iran said it will increase the number of centrifuges in its nuclear program in response to a censure by the United Nations’ nuclear watchdog, ratcheting up tensions with the West just days after it signaled a willingness to ease them.