This publication from Harvard University’s Belfer Center addresses the challenges in reaching an effective international climate agreement, particularly the cost and uncertainty associated with renegotiating commitments, and offers several suggestions for improving the effectiveness of international climate agreements.

Frank E. Loy and Michael Levi defend the so-called "Copenhagen Accord,"as "a serious step forward, if a severely limited one."

CFR's Michael Levi says the Copenhagen climate deal is a meaningful step forward but that its ultimate value remains to be determined.

Michael Levi declares that "The UN process can no longer be the central focus of global efforts to confront climate change."

British Secretary of State for Energy and Climate Change Ed Miliband discusses the progress made at Copenhagen.

Robert N. Stavins of the Belfer Center at the Harvard Kennedy School of Government assesses the Copenhagen Accord. He examines expectations leading up to the Copenhagen climate summit and explores procedural routes ahead.

In a Washington Post analysis, Anthony Faiola, Juliet Eilperin, and John Pomfret explain why the Copenhagen talks are an indication that a new world order may be forming with increasing power given to China.

David Corn and Kate Sheppard report on the varied reactions to President Obama's role in forming an agreement on climate change in Copenhagen.

This accord is the outcome of the the UN climate change conference held in Copenhagen from December 7-18, 2009. It is not a legally binding treaty. Among its points: attempting to limit global warming to 2 degrees Celsius above pre-industrial temperatures.

"Who, when it comes crunch time, might walk away if they don't see the right deal?" asks Michael Levi referring to the climate change negotiations going on in Copenhagen.

We should not underestimate the importance of the European Union's committment to give about $10 Billion over three years in climate assistance to developing nations, writes Michael Levi.

With an eye on the numbers associated with emissions and climate change, Michael Levi writes that representatives at the Copenhagen conference ought to accept the United States' proposal for emissions cuts.

President Obama, a newly minted Nobel Peace Prize winner, now faces the daunting task of delivering on a range of challenges, especially nuclear nonproliferation and climate change, says CFR's Michael Levi.

Michael Levi defends the so-called "Danish text," pointing out that its practical and important aspects are getting lost in the midst of all the controversy surrounding it.

Michael Levi comments what the EPA's recent classification of greenhouse gases as a pollutant means for the Copenhagen Conference.

Proposals that any carbon tax in developing countries which falls below the one in the developed countries should be offset through other means like border taxes spring from fears that have no basis in economic analysis, write Jagdish Bhagwati and Arvind Panagariya.

Amity Shlaes argues that by raising the cost of production, an environmental treaty at Copenhagen could hurt youth employment.