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Abstract *Sudden stops in capital flows are a form of financial whiplash that creates instability in the affected economies. The spark that ignites sudden stops originates in the supply of foreign financing that can halt for reasons that may be unrelated to the affected country's domestic conditions. Yet a spark cannot generate a fire unless combustible materials are available. Those materials are the domestic macroeconomic fundamentals that make some countries more vulnerable than others. Higher fiscal deficits, larger current account deficits, and higher levels of foreign currency debts in the domestic financial system are manifestations of weak fundamentals that increase vulnerability. On the flip side, international reserves provide buffers that can help countries offset the risks. While it may be impossible for countries to completely insulate themselves from the volatility of capital flows, the choice of antidotes to prevent that volatility from forcing potentially costly external adjustments is in their own hands.
JEL classifications: F30, F32, F40