Sociologists have been saying for a while that we're long past due for a World War. The fears that one would ramp up have only increased over the last ten years as the last people involved with them either died out or got too old for political office/military place. Essentially everyone who remembers just how terrible a world war were have all died off and now we have a bunch of younger hot heads who want to have a dick measuring contest without realizing just how damaging it really can be.
We simply have to just read the boards here to see how little people give to just what a real major conflict would look like, and the absolute devastation that even a handful of Russia's nukes being used would look like. I guess growing up in the coldwar still has me remembering all the dangers of a nuclear war. The fact that so many are certain that no one uses one and that no one escalates are just silly.
Again, there are red lines that may require we move in regardless of that threat; but you decide to play the big dog and guess wrong and you wind up radiating the entire planet. That's not a risk any sensible leader should take, and it doesn't make them weak to recognize how many people's lives they're putting at risk world wide. If we're going to amp up this escalation, that needs sign off of all of our major allies, not just the US deciding enough is enough.