Consequently I believe that if the EU is to intervene, which I think is a very reasonable thing to do, it should be by imitiating the Russian approach of using aircraft as flying artillery-- i.e. to release missiles etc., against Russian positions in Ukraine, but I also believe that we should attack Russian natural gas pipelines, ammonia plants, nitric acid plants, ammunition plants with long-range weapons. I also believe that it's reasonable to send in ground troops to seize Russian and Belarusian territory in locations where it can be determined that Russia lacks artillery, tanks etc., and to in that way force troop movements, thus depleting the front in Ukraine and allowing Ukraine to basically roll it over.
I believe that this is possible for several reasons, among them that we Europeans are three times as many as the Russians. I believe that it is unlikely to lead to nuclear war because I believe that the Russians are rational and well aware that any nuclear use by them leads to a proportional nuclear use by 'us', whatever that means, and that the number of nuclear weapons in Russian control is irrelevant for the reason that they're gone after an exchange of a mere hundred or so, so that anything beyond that is superfluous.
Unlike you, I don't think the EU had any business participating in this war.
I wouldn't dismiss a nuclear exchange quite easily.