It's not like anyone in the EU was seriously considering expansion now, given the economic crisis. Russia is taking credit for ending EU expansion, but EU expansion's been dead for years. If Croatia's ascension hadn't already been scheduled before the crisis, it would have stopped at the EU27...as is, the EU28 is not going to change for a long time, unless it changes by shrinking. (Or I suppose the secession of Scotland or Catalonia as EU member states, but that doesn't really count as expansion)
Some of the Balkan countries should be admitted in a few years.
