The key reason talks aren’t simpler: cash. These nations have to decide who will foot the bill for assisting in mitigation for developing countries, and the U.N. as a whole isn’t exactly sure who should do it.
“There will be another draft today where more square brackets will be removed but, most importantly, we need more consultations with our colleagues, said representative Gao Feng from China via Reuters. “On Friday or Saturday we may get there.”

Available at: http://www.slashgear.com/climate-change-conference-cop21-is-deciding-our-planets-future-10417967/