Whole of Europe has just discovered that you need to heavily invest in your armies and be part of a strong military alliance. And now the already partly occupied nation on ruzzis southern border shall feel safe without any allies?
Nah, buddies, piss off with that dumb idea. As an European I'd say: Make Ukraine stronger and help them achieve peace in their country at their terms.
Neutrality could work if we give Ukraine nuclear weapons and the ability to make more. That's the only thing other than a military alliance that'll reliably keep Russia out of the country.
I get the feeling that nuclear proliferation would not be seen as a desirable solution, though.
Good point. It's more of an "allowing them to build nukes" thing than a "teach them to build nukes" one – although the existing nuclear-armed nations could certainly accelerate the heck out of a Ukrainian nuclear program if they wanted.