I winder if Ukraine should just carry on and start annexing Russian territory, would stop the Russians concentrating their forces inthe Dombass.
Any kind of threat to Russian territorial integrity would probably heat things up in a very bad way. It's one thing to attack military targets across the border firing into Ukraine or supporting Russian activity there, quite another to start taking land.
I'm not quite sure things would go nuclear if Ukraine re-took Crimea (although that's got to be a worry), I'd be 100% sure it would elsewhere.
Sidenote but this article from Reuters amused me. See if you can spot the mistake with the photo they used...
https://www.msn.com/en-gb/news/worl...sedgntp&cvid=ee21b03b232743a4bb58ec3a7c0ecd04