The centerpieces of a potential climate deal in Paris are the 180 national emissions pledges for the period up to 2030, which
were submitted ahead of the conference. What is at issue now are the rules for their implementation, including funding of pledges from poor nations, and whether a procedure can be agreed for upgrading them later to give the world a chance of meeting its two-degree Celsius temperature-rise target. To do all that in the final few days of the conference, negotiators are considering a 48-page draft text that contains numerous brackets, which denote alternative options and text yet to be agreed on. U.N. Secretary-General Ban Ki-moon said he expected the final deal to include a review of emissions targets every five years to determine how they are playing out and to allow for increasingly ambitious goals that could secure the two-degree target.