Too many presidents "spoil the broth"?- What role for the European Commission in global climate change politics?

The European Union is the only supranational organisation to have both implemented ‘domestic’ climate change policy and provided leadership for the international community on adaptation and mitigation measures. Although the competence for action in climate change is shared between the national governments and the supranational level of the European Union, on behalf of the EU the European Commission has played a prominent role in international climate change negotiations. The Lisbon Treaty (in force December 2009) brought a number of changes to the institutional framework of the European Union, most significantly to the European Council and the external role of the EU. These changes appear to have added to the complexity which surrounds issues of the external representation of the EU and not simplified them – are there too many ‘Presidents’ of these institutions vying for a role? This paper questions the extent to which these changes will impact on the Commission headed by Jose Manuel Barroso, Barroso II Commission (2009-2014), particularly on Barroso’s ability to provide leadership on ‘domestic’ climate change policy and hence direction to the approach which the EU takes in global climate change politics.