Editors Introduction.- Editors Introduction.- 1: International Dimensions.- 1 International Environmental Agreements as Games.- 1. Introduction.- 2. Reaching agreement.- 2.1. Identical countries.- 2.2. Cost differences.- 2.3. Benefit differences.- 2.4. Choice of a benchmark.- 2.5. Summary.- 3. Sustaining agreement.- References.- Comments by Henk Folmer.- 2 Emission Taxes in a Dynamic International Game of CO2 Emissions.- 1. Introduction.- 2. A static game.- 3. A dynamic game.- 4. The open loop equilibrium without taxes.- 5. The Markov perfect equilibrium without taxes.- 6. Other subgame perfect equilibria.- 7. Pigouvian taxes.- 8. Non-commitment and taxation.- References.- Comments by Otto Keck.- 3 Critical Loads and International Environmental Cooperation.- 1. Critical loads.- 2. Naive interpretations.- 3. Stock of pollutants the case of one country.- 4. Stock of pollutants several countries and the open loop equilibrium.- 5. Closed loop or feed back equilibria.- References.- Comments by Henry Tulkens.- 4 Environmental Conflicts and Strategic Commitment.- 1. Introduction.- 2. Analytical framework.- 3. Asymmetric players and endogenous strategic timing.- 4. N players and strategic team formation.- 5. Conclusion.- References.- Comments by Detlev Homann.- 5 The Choice of Environmental Policy Instruments and Strategic International Trade.- 1. Introduction.- 2. The model.- 3. Single stage Cournot model.- 4. Two stage Stackelberg model.- 5. Two stage Cournot model.- 6. Conclusions.- References.- Comments by Marji Lines.- 6 Economic Models of Optimal Energy Use under Global Environmental Constraints.- 1: The CO2 Problem in Basic Models of Optimal Use of Fossil Fuels.- 2. Background problem on climatic change and global environmental constraints.- 3. Economic studies on the CO2 problem.- 4. Preliminary definitions and the general model.- 5. A simplified model.- 5.1. Necessary conditions.- 5.2. Sufficient conditions.- 5.3. Definition and optimality of equilibrium.- 5.lÓ)