In the real world, developed countries are permitted to impose tariffs only on a small range of imports (partial tariff). For this reason, tariff policies have been replaced in many countries by other policy devices such as a competition policy. This study compares a competition policy with a...

The authors build a trade model that renders tractable the process in which imperfect competition in a country's downstream sector affects the rest of the world through international trade. For this purpose, internationally traded goods are viewed as middle products in the vertical chain of...