Dag Harald Claes is a Senior Research Fellow at the ARENA (Advanced Research of the Europeanisation of the Nation-State) program. He holds a Ph.D. from the University of Oslo, and he has authored numerous books, articles, papers, and research reports on related subjects.

• Market context; political context; OPEC as an international organization; price and production policy of OPEC countries; country case I - Saui Arabia, a hegemonic power; OPEC - a successful cartel?; extending the cooperation - OPEC and the non-OPEC producers; country case II - Norway, from free-riding to cooperation; oil producer cooperation and the study of international political economy.

Dag Harald Claes is a Senior Research Fellow at the ARENA (Advanced Research of the Europeanisation of the Nation-State) program. He holds a Ph.D. from the University of Oslo, and he has authored numerous books, articles, papers, and research reports on related subjects.

• Market context; political context; OPEC as an international organization; price and production policy of OPEC countries; country case I - Saui Arabia, a hegemonic power; OPEC - a successful cartel?; extending the cooperation - OPEC and the non-OPEC producers; country case II - Norway, from free-riding to cooperation; oil producer cooperation and the study of international political economy.

Dag Harald Claes is a Senior Research Fellow at the ARENA (Advanced Research of the Europeanisation of the Nation-State) program. He holds a Ph.D. from the University of Oslo, and he has authored numerous books, articles, papers, and research reports on related subjects.

• Market context; political context; OPEC as an international organization; price and production policy of OPEC countries; country case I - Saui Arabia, a hegemonic power; OPEC - a successful cartel?; extending the cooperation - OPEC and the non-OPEC producers; country case II - Norway, from free-riding to cooperation; oil producer cooperation and the study of international political economy.