Both the literature as well as the evidence on speculative attacks in
foreign exchange markets provide important lessons for managing an exc
hange rare regime. Balance of payments crises, rather than being exoge
nous shocks, could well be the equilibrium outcome of maximising behav
iour by rational agents faced with a fundamental inconsistency between
monetary and exchange rate policies. The longer the delay in bringing
about such consistency between monetary, fiscal and exchange rate pol
icies, the higher will be the potential costs of an eventual adjustmen
t when ultimately faced with the inevitable regime collapse.