I have a theory they're being conservative in how they handle this because they don't want to give other Western powers justification for joining the war (justification, not reason); America and Israel are extremely unpopular right now, and joining a war of aggression on their side (one with zero plausibly deniable excuses) is the end of your political career. They're trying to normalize the idea that they may have to join the army and fight Russia and that's already unpopular enough, this has zero chance of being widely accepted.