This paper focuses on what countries can do on their own-that is, on the role of domestic policies-with respect to country insurance. Member countries are routinely faced with a range of shocks that can contribute to higher volatility in aggregate output and, in extreme cases, to economic...

We present a model of the optimal level of international reserves for a small open economy seeking insurance against sudden stops in capital flows. We derive a formula for the optimal level of reserves, and show that plausible calibrations can explain reserves of the order of magnitude observed...