therefore have to sell the anchor currency and buy its own to keep its currency fromdepreciating. The result of this foreign exchange intervention will then be a declinein the smaller country’s international reserves, a contraction of its monetary base,and thus a decline in its money supply. Sterilization of this foreign exchange intervention is not an option because this would just lead to a continuing loss of international reserves until the smaller country was forced to devalue its currency. The smallercountry no longer controls its monetary policy, because movements in its money supply are completely determined by movements in the larger country’s money supply.Another way to see that when a country fixes its exchange rate to a larger country’s currency it loses control of its monetary policy is through the interest parity condition discussed in the previous chapter. There we saw that when there is capitalmobility, the domestic interest rate equals the foreign interest rate minus theexpected appreciation of the domestic currency. With a fixed exchange rate, expectedappreciation of the domestic currency is zero, so that the domestic interest rate
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