I'd be quite surprised if things took that route. I suppose time will tell, but the current national politics in Ukraine are such that EU membership seems less likely not more. They've turned their media into a completely insane propaganda machine, they're talking about banning political parties, they're allowing questionable paramilitaries, and essentially private armies, under the flag of fighting the rebels... Meanwhile their economy is shrinking, the population is leaving, and a bloody internal conflict is continuing. Not to mention there's a primary financial question. Who will fund the government of Ukraine for the rest of this year, and next year? Will the EU cough up tens of billions for Ukraine? Will the IMF do it? Before this airliner shoot down the EU was sending signals that they want Russia to participate financially in helping Ukraine but the Russian response was essentially an elaborate "no way".
this is a logical question
