· First and foremost is the politics of shaping and sharpening a coherent vision while maintaining the strong level of member- state support generated during the OWG process.
· Second (and almost as foremost…) is the challenge of intellectual and policy coherence. It is going to be hard to find a perspective to drive the 2015 goal set in the same way the human-development paradigm drove the 2000 set. But the beginnings of this are there – in the strengthening of understanding of sustainability and the global challenge it poses.
· Third is the challenge of getting the goal and target sets into a shape where they work both individually and together, so that each goal and its accompanying targets are sufficiently clear, measurable and coherent in and of themselves.
· Fourth is working out how it all works in practice. The notion of targets set at the national level (in line with the goal framing) is now so firmly embedded in the key texts (the High-Level Panel report as well as the OWG outcome document) that it is hard to see that changing. There are a range of significant challenges to the architecture and operating process of the follow-up system.