It is tough to understand what happens at the climate negotiations and how it happens, but I am starting to wrap my head around it. Within the negotiations process, groups with similar interests come together to form coalitions to amplify their affect. Within these groups there are subgroups and sometimes sub-subgroups for specific policy issues and/or regional concerns. Any country can be part of as many or as few groups as they like. It's a strategic decision, and often times it is limited by the size of a particular country's delegation. This grouping system means that a group must reach a consensus and then, as a group, try to express and advance their ideas about the treaty in opposition/relation to all the other groups fighting for space with the eventual goal of putting their ideas, or some form of their ideas, into the final document that will someday become the international climate treaty.
This leads to an immensely complicated process of policy point trading. The U.S. might not care so much about Land Use and Land Use Change policy dealing with swamps, so they might trade this point with AOSIS (Alliance of Small Island States) for support on the framework of how we keep track of carbon emissions from manufacturing. Even with this great political game going on, it's really boring to watch: it all happens in a room filled with rows and rows of negotiators sitting at long tables with country placards and microphones being called upon one after the other to express support or dissent for proposals. Once a negotiator is called upon they could talk for 10 minutes (often done to deliberately waste time or to create a sense of urgency around consensus for a particular issue), or they could say 3 words (perhaps indicative of a desperate negotiator trying to save time).
When an agreement is reached on the ideas surrounding an issue, then the words of the text have to be decided. This means a bracketing of text. Yes, [brackets]. A sentence might look like...We must have [a robust legal framework surrounding the transfer of adaptation technologies][protect intellectual property rights with a strong international legal framework][pass sanctions on countries who fail to adequately protect intellectual property rights of parties allowing access to adaptation technologies]. And so on and so on, and then you pick and fight for your favorite wording, or you add another bracket. Or, and if you don't like version 1 and just can't live with the bracket situation happening, then you could always submit version 1a, 1b, 1c with language of your own.
Right now, Saudi Arabia, Bolivia and the rest of the world are at a standstill about adding a target of limiting climate change to 1.5 degrees Celsius in a shared vision text (which is more like a mission statement than anything else). The Bolivians (super socialist) are pushing for a 1 degree Celsius change, the rest of the world is asking for 1.5 degrees Celsius, and Saudia Arabia (a long time obstructionist of the climate negotiations) is pushing for 2 degrees Celsius. So the text looks like this now [1.0][1.5][2.0].
A quick dip into the geo-politics of why this is happening...The Bolivians see themselves as being one of the few countries to genuinely represent and push for indigenous rights. They're undergoing a big socialist movement now that is giving the indigenous majority there a role in the government for the first time, and so they are very blunt as negotiators and push for things that the rest of the world will not ever accept. The Saudi Arabians, our allies who produced Osama bin Laden and the 911 high-jackers, have been trying to slow and stop this process for years. They continue to profit from the inelastic demand of oil and the money applied by the U.S. and other nations to have some influence over OPEC. The rest of the world is doing a lot of talk here about shifting away from heavy dependence upon oil, which is bad news for the Saudi's cozy position, so they obstruct, delay, and block reasonable proposals, like the 1.5 degrees Celsius limit for the effects of climate change in the shared vision part of the text.
And, that's an oversimplified explanation to one single little bracket fight going on now. There are hundreds happening on all different subjects here in Cancun today.