Its a spiteful thing to do to the next administration, but I doubt it will lead to nuclear war. 

I suppose our friends could use it to hit some NPPs and try to get a Russian nuclear response.

But other than that, it adds a few Russian economic and cultural facilities to the target list, and a bunch of airbases. 0% chance of effecting battlefield momentum, so I don't see why Russia would re-escalate with nukes.

More likely they'd just escalate to supplying Ansrallah with missiles as well as intel.