Neither the US, nor EU nor russia is a monolithic block. So I try to avoid black and white framing in general. But especially the US warningbefore 2014, when at the same time with surplus fracking gas, not many considered serious. Besides, while everyone was buying from the Saudis and co. So why not russia?

Now at latest by 2014 that should have changed indeed. But even then different approaches would have been possible then cutting all ties and hope this will work out better.