First, they argue that China is finding itself increasingly alone as a buyer of dollars as other central banks grow wary of a currency that must at some point depreciate.

ECONOMIST: Forever free | The

But "it's obviously better to be outside" the euro zone now, said Poland's central-bank governor, Marek Belka, because "we can avail ourselves of a sovereign monetary policy, including the ability of the currency to depreciate, " and don't have to share in the cost of bailouts.

WSJ: European Disunion: Euro's Allure Dims in Eastern Europe