The terms of trade of commodity-exporting countries are directly affected by the large-scale swings of worldwide prices. These terms of trade represent one of the key determinants of the real exchange rates of these economies. By estimating long-term equilibrium exchange rates we can gauge their impact for oil exporters and for exporters of other commodities. We then evaluate currency ‘misalignments’ as the discrepancies between the observed real exchange rates and their equilibrium values. Can these misalignments themselves be explained? In countries whose currencies are anchored to the dollar or to the euro, the misalignments are shown to depend on the behaviour of the anchor currency. When the anchor currency appreciates, the anchored currencies tend to be overvalued; when it depreciates, their undervaluation is likely.

 Keywords : EXCHANGE RATE | INTERNATIONAL TRADE | EXCHANGE RATE POLICY

 JEL : f10, f31

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