I'm not sure how that "conventional violent response" would work.
One can imagine scenarios of varying effectiveness, but this a separate matter. The point is -- the Biden administration has made it clear to the Russians that there would be a significant response, with strong hints that it would be military in nature and not limited to extra sanctions.
If Russia can use nukes against Ukrainian army entering the Russian territory, then for sure it would use them against NATO troops doing the same.
The response doesn't need to involve NATO troops in Ukraine.
Meanwhile it'd be kind of hard to use nukes against stealth bombers, cruise missiles, drones and SF operations.
One can imagine scenarios of varying effectiveness, but this a separate matter. The point is -- the Biden administration has made it clear to the Russians that there would be a significant response, with strong hints that it would be military in nature and not limited to extra sanctions.
If Russia can use nukes against Ukrainian army entering the Russian territory, then for sure it would use them against NATO troops doing the same.
The response doesn't need to involve NATO troops in Ukraine.
Meanwhile it'd be kind of hard to use nukes against stealth bombers, cruise missiles, drones and SF operations.