Russia doesn’t need either Europe or the US in any fundamental way. From Patrick Armstrong at strategic-culture.org:
I have argued that Russia is not a “European country”; my argument stands on the fact that Russia and Europe had quite different histories and little contact until the Emperor Peter became a major player in European history by knocking Sweden out of the running. I have argued that, whatever they may have wished in the past, an increasing number of Russians today don’t want to be “Europeans”: they view Europe – the West – with increasing distaste and bewilderment. “Europe” is, of course, a word with many meanings: here I mean a culture/civilisation/society that, over the past half millennium, has spread around the world and now is commonly called “the West”. These days, the capital power of the West is the USA but the USA, Canada, Australia, much of South America and many of the other outposts of European settlement are children of the original European civilisation.
Russia’s relationships with the West have gone through many ups and downs – ally, for example, with Britain in 1812, 1914 and 1941, enemy in 1853, 1918, opponent during the so-called Great Game and the Cold War. Russians often see the relationship as one of ungrateful rejection: take, for example, the long-forgotten important service Russia did for the Union in 1863. In my mind this feeling stems from Russia’s unusual history as a predator fish which remembers its long time as a prey fish – its neighbours remember the first, itself the second – the prey fish feeling was, of course, strongly reinforced by the death struggle of 1941-45.