This paper focuses upon the increasing propensity of the EU to engage in climate change unilateralism. EU climate unilateralism consists of two key components. First, it extends the reach of EU climate change law beyond the borders of the EU and regulates GHG-generating activities that may be viewed as taking place abroad.

International agreements are not enough. Interlinked national and regional tools are also needed to reduce carbon emissions, say Mark Maslin and Joanne Scott.

http://www.nature.com/nature/journal/v475/n7357/full/475445a.html