Putin signs revised nuclear doctrine lowering threshold for nuclear response

Russian President Vladimir Putin has signed a revised nuclear doctrine that lowers the threshold for using nuclear weapons. The new policy states that a conventional attack on Russia, supported by a nuclear power, will be viewed as a joint attack. This update comes as the U.S. allows Ukraine to strike targets in Russia with longer-range missiles. The revised doctrine specifies that a massive aerial attack on Russia could trigger a nuclear response, broadening the conditions for nuclear weapon use compared to the previous version. The new doctrine also includes provisions for potential nuclear responses to aggression against Belarus, a close ally of Russia. This marks a significant shift in Russia's nuclear strategy amid ongoing tensions in Ukraine.