Provision of liquidity by an international lender of last resort – the European Central Bank, the International Monetary Fund, or even a new European Monetary Fund – could prevent an illiquidity problem from turning into an insolvency problem. But if a country is effectively insolvent rather than just illiquid, such “bailouts” cannot prevent eventual default and devaluation (or exit from a monetary union) because the international lender of last resort eventually will stop financing an unsustainable debt dynamic, as occurred Argentina (and in Russia in 1998).