A bully (Russia) comes up to a child (Ukraine) and kicks them in the shin really hard (Crimea). Then grabs them by the shirt and rears back like they're about to punch the kid.

You're right, why waste money teaching the kid Aikido when we could instead spend that money on school tutors to try to get them into schools that don't have bullies.

What good would a military do? The US has a more powerful military than russia, China and Europe put together, yet lost in iraq and afghanistan.

A better solution would be to stop giving russia money for its gas. That means not shutting down nuclear plants, and instead building many many more power plants to make Europe energy independent

Right, playing world police should be right at the top of Europe's plan for saving the climate.

Why not both?

Build renewables and nuclear instead of increasing dependency on gas from a geopolitical bully?

Why not just mix human rights in China also into the discussion? Make everybody into vegans cause animal cruelty? Police brutality? School crisis?

Obviously different problems are always best tackled in combination! Practically guarantees success. /s

And obviously geopolitical bullies should just not be talked to. Hm so let's see who is left to talk to then. Russia, China, U.S., NATO, none of those won't an option anymore. Good to keep your principles. And good luck doing anything good to the climate with the strategy of only talking to yourself (assuming your country isn't a geopolitical bully itself, which is likely quite a stretch, given the odds.)