The EU has a combined GDP almost equivalent that of the USA. Basically exactly the same once you factor in the UK, Switzerland and Norway. They have 2 nuclear powers. Italy has a larger GDP than Russia.
Its pretty pathetic if 'Europe' cannot defend itself against Russia (seeing as that's what you're suggesting and not a country at the very edges of Europe).
Also not sure what that has to do with your original point, where you created an equivalence between not agreeing to a NFZ, while still being the largest individual military supporter of Ukraine, and actively providing weapons, money and diplomatic cover, as they do for Israel.