Elliot Diringer of the Pew Center considers China and the US positions, says they are engaged in constructive dialogue, particularly over transparency and are making particular progress. He doesn’t believe that China will enter into an agreement without China. He says the numbers are not under negotiations, but how the ones under the Copenhagen Accord are incorporated. He explains that there will be continued pressure on parties to review the targets in the long term. He also explores what needs to happen on fundamental building blocks to a binding treaty, but believes it is possible to separate them. He finishes on the possible outcomes of Cancun.