NB: I don't take Mark Ames as the definitive read on the situation, but it is a useful perspective.
Everyone looking for a proxy side to support or oppose in the Ukraine political dynamic will be disappointed. Ukraine politics go by their own rules. Today’s neoliberal ultranationalist could be tomorrow’s Kremlin ally, and visa-versa. Just look at what happened to the Orange Revolution—nothing. To wit:
a) One Orange Revolution leader, Yulia Tymoshenko, wound up turning against her partner Viktor Yushchenko and allying with Yanukovych to strip Yushchenko of presidential powers; later, Tymoshenko allied with the Kremlin against Yushchenko; now she’s free from jail and the presumptive leader of the anti-Yanukovych forces.
b) The other Orange leader—the pro-EU, anti-Kremlin Viktor Yushchenko—wound up allying with pro-Kremlin Yanukovych to jail Yulia Tymoshenko.
c) John McCain has been the big driving force for regime change against Yanukovych, but McCain’s 2008 campaign chief’s lobby firm, Davis Manafort, managed Yanukovych’s political campaigns and his lobbying efforts in the US.
I'm just sick of the reflexive "we need to act" crowd, who almost universally don't understand at any adult level the complex dynamics of the situation.