David tells Climate Home how he previously lost faith in the COP process in its ability to reduce global greenhouse gas emissions. However he views Paris as different because there is a new bottom up strategy encapsulated in the INDC process. He adds that the creation of bilateral and multilateral coalitions to tackle different areas such as the Arctic and Clean Air means countries are not just working at the wider international level. David is concerned that the 1.5 degree or 2 degree target will be seen as the metric for success, he believes that what matters at Paris is setting up a scheme that ensure future progress. Finally, David thinks the most important outcome of Paris must be a ratchet and review mechanism