Let's say Putin became unhinged and suicidal enough to use nukes as one last middle finger to his enemies. Could Russian generals refuse to comply with his order to launch nukes and instead perhaps depose or even execute him? I really hope they wouldn't simply obey such an insane order, but I don't know.
Would the chain of command really override generals' desire to live and not start a nuclear war?
Would the chain of command really override generals' desire to live and not start a nuclear war?