This paper examines a strategic trade policy game with endogenous timi
ng. A trade-off between commitment and flexibility is identified. The
equilibrium timing of trade policy decisions is shown to highly depend
on the degree of demand uncertainty. When demand uncertainty is low,
countervailing duties will never be used because the home government a
lways sets its import tariff before the foreign government sets its ex
port subsidy. When demand uncertainty reaches a threshold level, the h
ome government starts to find it optimal to move second with positive
probability. As a result, we provide an economic rationale for the pre
vailing use of countervailing duties in practice.