Big developing nations like China and India are rejecting key points in worldwide climate guidelines.
One of the biggest sticking points is cutting world greenhouse gas emissions by 2050. They also do not like the idea of setting a 2020 deadline for a peak in world emissions, and limiting global warming to a max of 2 degrees Celsius above pre-industrial times.
"The paper is defensive. It lays out the red lines for those emerging economies," one European diplomat with knowledge of the paper's contents told Reuters.
"They don't want any figures under the heading of a shared vision in the Copenhagen draft," a second diplomat said.
The developing nations fear the strict guidelines will hamper their own economic growth.
The push back comes just five days before talks about climate control are slated to start in Copenhagen, Denmark.