We analyze non-cooperative environmental policy when the only strategic interac-tion between countries is through bilateral transboundary pollution, i.e., countries areclosed or small open economies. When countries set pollution taxes simultaneously,there is no carbon leakage. However, in the...

The welfare dominance of ad valorem taxes over unit taxes in a single-market Cournot oligopoly is well-known. This article extends the analysis to multi-market oligopoly. Provided all ad valorem taxes are positive, unit costs are constant, firms are active in all considered markets, and a...