Russian spy chief says NATO aid for Ukraine missile strikes will be punished Reuters.comRussia’s Updated Nuclear ‘Red Line’ Adds Uncertainty: Experts Barron’sHow might Russia respond to UK and US letting Ukraine hit it with their missiles? The GuardianPutin lowers the threshold for using his nuclear arsenal after Biden’s arms decision for Ukraine The Associated PressPutin approves new nuclear weapons doctrine for Russia. Here’s what it means. NBC News