Who is to blame for the failed talks in Copenhagen?

The very weak and dissapointing results shown at Copenhagen call for a change of the UN negotiating process...More links on the Copenhagen talks, from UK's "The Guardian"...

Copenhagen treaty was 'held to ransom', says Gordon Brown
UK's PM Gordon Brown calls for reform of UN climate talks after Copenhagen talks end in weak agreement(the Guardian)
http://www.guardian.co.uk/environment/2009/dec/21/copenhagen-treaty-gordon-brown

The road from Copenhagen
UK Climate secretary Ed Miliband accuses China, Sudan, Bolivia and other leftwing Latin American countries of trying to hijack Copenhagen

http://www.guardian.co.uk/commentisfree/2009/dec/20/copenhagen-climate-change-accord

How do I know China wrecked the Copenhagen deal? I was in the room
As recriminations fly post-Copenhagen, one writer offers a fly-on-the-wall account of how talks failed
http://www.guardian.co.uk/environment/2009/dec/22/copenhagen-climate-change-mark-lynas

Copenhagen: The key players and how they rated
http://www.guardian.co.uk/environment/2009/dec/20/copenhagen-obama-brown-climate

Danwei interviews Jonathan Watts: "Copenhagen will shape our lives for years to come"
http://www.danwei.org/foreign_media_on_china/danwei_interviews_jonathan_wat.php

and other points of view about why the talks in Copenhagen failed:

If you want to know who's to blame for Copenhagen, look to the US Senate
http://www.guardian.co.uk/commentisfree/2009/dec/21/copenhagen-failure-us-senate-vested-interests

Blame Denmark, not China, for Copenhagen failure
http://www.guardian.co.uk/commentisfree/cif-green/2009/dec/28/copenhagen-denmark-china

INTERVIEW - Copenhagen blame game not helpful - U.N. climate chief
http://news.yahoo.com/s/nm/20091224/india_nm/india449579

Disappointment at Copenhagen deal 'justified': Obama
http://news.yahoo.com/s/afp/20091224/sc_afp/unclimatewarminguspolitics