In a new CEPS Commentary on the implications of the Copenhagen Accord on the EU, the authors are wondering why the outcome is seen so differently in the EU and the US and find very different expectations and perspectives on both sides of the Atlantic. This Commentary argues that the Copenhagen Accord can be an important first step towards an architecture, but i) shifts from a top-down target and timetables approach to voluntary pledges, ii) cements very inequitable table carbon budgets, iii) brings the world onto a pathways to 3.2