The US did instigate this conflict, but nevertheless Russia wanted to use the Ukraine as a buffer between itself and the West.
I have a long post on it in Polly's blog- about the new Cold War. Where I argue it isn't a Cold War but rather a return to pre- WWI great power politics. @IMPress Polly
I even include the distances between NATO and Moscow at various points in history. Russia is wise to be wary. But the West should understand that Russia has no ability to project force for any relevant period of time. Outside of their nuclear forces, they are impotent.