The EU just told Zelensky not to touch the pipelines, otherwise Ukraine would loose support of many European countries.
Since the start of Putin's criminal invasion of Ukraine, the EU has paid 35 billion euros to Russia and send about 1 billion € of weapons.
The UK sent plenty of weapons, certainly because the Tories had to prove that they have not been corrupted by Russian oligarchs' money - which they were. London has been nicknamed "the Laundry" by Russian oligarchs.
The US has sent plenty as well.
Stopping the imports of oil and gas would be a huge blow for the Russian economy. The EU is working on it, but the dependency is very high.
So the EU ought to act more decently towards Ukraine and provide all the weapons and training they need. I consider that volunteers among professional soldiers should be allowed to take a sabbatical and go - by their owns means and without weapons - to Ukraine. In the end, they will retrieve the weapons they are used to.
We need to do more for Ukraine. The dependency on the Russian has and oil makes that need even more pressing.
Tens of thousand professional soldiers from the EU would make a difference.
Note: The volunteers going on their own, it implies that they won't be paid. So private citizens would have to compensate them: they have families to sustain. I'm pretty sure that money wouldn't be a problem. But it has to remain a private decision, nothing involving the states.
By the way, OTAN is a defensive alliance. It doesn't forbid a member to decide to send troops on the Ukrainian front. The US won't and shouldn't. That's an European war. Having the US support (weapons, logistics, intelligence) is already a huge help.
As a French citizen, I feel that our duty as a democracy is to officially sends troops to Ukraine. Putin needs to be stopped.
I don't believe in a second of a nuclear escalation, escape on one matter: Crimea. It's an Ukrainian territory but Russians may go bersek if we retake it. But let's kick Putin out of Dombass and Transnistria.
But, if reelected, Macron is far too concerned by French large investments in Russia ; and its far-right opponent, Le Pen, share many views with Putin (and has yet to reimburse 12 millions of euros lent by a Russian bank for her 2017 campaign).