The Center for Climate and Energy Solutions released a report November 28 listing three approaches governments could take in the annual international climate negotiations. The first is to expand the basic architecture of the Kyoto Protocol of absolute, national emissions reduction targets and international accounting rules to include more countries; the second, to legalize the types of commitments made at the 2010 negotiations, in which countries decide on their own emissions targets and actions; or the third, to take a multifaceted approach in which countries choose among different tracks.