It has been evidenced that the U.S. dollar is prominent in the exchange rat
e regimes of Asian countries. This paper shows that the relative stability
of Asian exchange rates against the U.S. dollar until the 1997 crisis is no
t accounted for by the theory of optimum currency areas, in contradiction t
o the situation in Europe vis-a-vis the deutsche mark. An alternative frame
work is proposed where the absence of a yen bloc is explained by the mismat
ch between the country distribution of trade and the currency distribution
of the debt. It is shown that the lack of cooperation makes Asian countries
underweight the yen in their implicit basket pegs. J. Japan. int. Econ., M
arch 1999, 13(1), pp. 44-60. University of Lille 2 (CADRE) and CEPII, 9 rue
G. Pitard, 75015 Paris, France. (C) 1999 Academic Press.