[sereja]

Actually, during the Medvedev presidency, there were serious efforts to negotiate visa-free travel and reduced tariffs (which is the essence of what everybody wants, not full integration). If these things were granted, the revolution / civil war in Ukraine, primarily motivated by one part of the country mostly trading with Russia and the other with the EU, probably wouldn't have happened.

[hgsgm]

That doesn't account for how eastern Ukraine has a much larger percent of ethnic Russians than western, nor Russia's invasions andntakeovers of other former Soviet territories.