Four international environmental and developmental organizations in Cancun urged ministers from all countries to produce a strong and meaningful climate agreement, and one called out the Obama administration for blocking progress in talks under way.

Executive director of CAN International David Turnbull pointed out that when Obama came into office he was as optimistic; however, now it appeared that the Obama administration are paying too much attention to the climate-denying senators in Washington DC rather than living up to the goals they have frequently pronounced publicly.

"They are blocking progress on increased transparency in their own reporting while demanding more from China and India on that same issue," he said.

President of WWF International Yolanda Kakabadse said, "Governments should stop blaming each other and have the courage and the vision to be remembered by the people of the world. This is not a winners and losers option — we must all win."

Jeremy Hobbs, executive director of Oxfam International, believes that all countries need some practical progress to build trust, confidence and momentum that will deliver concrete results in Cancun.

"With just two days left in the Cancun talks, we are in a position to move forward on a number of significant issues. Now it's time for the negotiators to stop blocking and get to work negotiating," Hobbs said.

Kumi Naidoo, executive director of Greenpeace International said, "Ministers here in Cancun can make history this week; they can set in motion a sequence of events that will build hope for the future, mark a transition to a fair and just world in which the environment and equity go hand in hand, and they can build the trust needed to deliver a climate-saving treaty in Durban."