The Russian president says it would "significantly change" the nature of the Ukraine conflict and amount to "nothing less than direct involvement of NATO countries".
Devil's advocate: Some military plans might be more of a thought experiment or training exercise or black swan event prepping than a serious we totally gonna do this. For example, there are plans to invade Canada, plans for zombie invasions, etc..
Now to unadvocate for the devil, the "Zombie" plan can be recycled to apply for reacting to a US citizen led communist revolution, or mass rioting against Imperial interests, the "Nuke everyone but the US" plan might be useful if the US suddenly finds itself to be the last non-socialist country, etc..
Devil's advocate: Some military plans might be more of a thought experiment or training exercise or black swan event prepping than a serious we totally gonna do this. For example, there are plans to invade Canada, plans for zombie invasions, etc..
Now to unadvocate for the devil, the "Zombie" plan can be recycled to apply for reacting to a US citizen led communist revolution, or mass rioting against Imperial interests, the "Nuke everyone but the US" plan might be useful if the US suddenly finds itself to be the last non-socialist country, etc..