I think France could counter Russian nukes. Most of the best parts of Russia are in the West and France has hundreds of them.
If the less than 300 nukes France has are enough, for what does the US maintain 5000 ? There are talks about expanding Frances nuclear arsenal to replace the US as Europes nuclear shield but we are quite a bit away from that yet.
The Europeans, including the UK, have two 6th generation fighter programs. The FCAS and Tempest/GCAP. They probably could have gotten a F-35 European figher if they wanted to. And they have enough EUrofighters to check whatever Su-30/Su-35/Su-34 4.5 Gen jets—Russians can throw at them even without F-35s. And I am sure European could, in theory, create the parts; they do have a R&D base to do so.
The Eurofighters are old. FCAS and GCAP are more than a decade from being relevant. Overall the various European air forces are just not really strong. They lack planes or training (in part because training in the EU is difficult in such an overcrowded airspace). It is very questionable whether Europe could enforce air supremacy in a conflict against a major power.
Intel is just a matter of investment; are you telling me there is no one in Europe who is Russian, Iranian, Arabic, or Algerian and is an EU citizen?
The UK is integrated with the 5 Eyes, far less with the other European agencies. Most of the other agencies are smaller, less powerful and more inward focussed. Many European parliaments also have a deep distrust towards overreaching intelligence agencies, often limiting their power. But most importantly Europe does not have all the spy sattelites and less control over the internet infrastructure.
The problem with Europe is a lack of energy resources and other resources that the Russians, Chinese, and Americans have lots of, which I keep telling you guys (and I am sure competent policymakers in the EU know this). You guys should invade Russia in the future and create a European Iron Dome to at least invest in it.
Europe won't conquer Russia. Europe also has had little problems with getting missing ressources via trade instead of direct control. Colonialism is nowadays seen as a colossal failure even for the colonizers. Your ideas of geopolitics are one and a half centuries behind the times.
That said, it is more likely that Canada joins the EU than Russia does. I am pretty sure you are aware of various polls showing Canadians being in favor of it. Sure, they might reconsider once they realize all that entails and it is also questionably whether all the EU countries would agree but there are many states of "half in, half out" with the EU and "EU candidate", EEA, EFTA or whatever Switzerland got might actually be feasible. - If anything was even needed in the first place. With CETA the Canada-EU trade is already pretty frictionless.
As for energy, Europe still wants to go away from fossils. That is not relevant for long term planning and for short term the supply is secured.
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But for actual Ukraine news : It seems China is proposing to participate in peacekeeping. Do they have enough of the war (the whole sanction stuff is a headache and the war itself basically shut down belt and road) ? Is it part of a charm offensive towards the EU ?