It won’t be over in a week.
And it will go global pretty quick.
I think that a “war” wouldn’t be the thing to happen here. It will be worked out like a coup - Where leftists are shoved out of their positions en-masse. The Military won’t fight it.
The leftists will lash out locally - with pockets of violence that can be easily dealt with.
A civil re-structuring more like it. The word “War” means that we are killing those who disagree with us. That’s a very real concept, but it’s hard to say that we will all be sniping each other because over abortion, taxes, the size of government or our already established amendments and rights.