I'm not satisfied at all with Europe response so far, but i might be missing something here.

> can I rely on these people who threw out every treaty for a want of sleeping without a blanket?

Why isn't the US sending troops? Because the risk of escalation and nukes are unacceptable. In case you forgot, Europe also has nuclear powers and the risk of escalation is higher if the EU as an organization openly acts on more then soft power.

And as far as i know, only the US and the UK are ignoring a treaty to offer security to Ukraine.

Again, I'm not satisfied with the response so far, but what exactly are you suggesting so that EU bureaucrats don't lose their credibility?