In a major address before the UN Security Council on February 6, 2006, Senator Richard G. Lugar (R-Indiana), Chairman of the U.S. Senate Foreign Relations Committee, called for the United States to return to negotiations under the Framework Convention on Climate Change to achieve a comprehensive international approach to global warming. He said a "roadmap to this outcome" is contained in the recent report of the Climate Dialogue at Pocantico  convened by the Center.
Excerpt from Senator Lugar's address:
"...[Fossil fuel] dependence also presents huge risks to the global environment. With this in mind, I have urged the Bush Administration and my colleagues in Congress to return to a leadership role on the issue of climate change. I have advocated that the United States must be open to multi-lateral forums that attempt to achieve global solutions to the problem of greenhouse gases. Climate change could bring drought, famine, disease, mass migration, and rising sea levels threatening coasts and economies worldwide, all of which could lead to political conflict and instability. This problem cannot be solved without international cooperation.
The time is ripe for bold action by the international community because much has changed since talks first began in 1992 on what became the Kyoto treaty. For one, China and India, who won exemptions from the treaty’s emission-cutting requirements, have enjoyed rapid growth. They are now much greater sources of greenhouse gases than anticipated, but also far stronger economies, more integrated into the global system.
Our scientific understanding of climate change has also advanced significantly. We have better computer models, more measurements and more evidence -- from the shrinking polar caps to expanding tropical disease zones for plants and humans -- that the problem is real and is caused by man-made emissions of greenhouse gases, including carbon dioxide from fossil fuels.
Most importantly, thanks to new technology, we can control many greenhouse gases with proactive, pro-growth solutions, not just draconian limitations on economic activity. Industry and government alike recognize that progress on climate change can go hand in hand with progress on energy security, air pollution, and technology development.
A roadmap to this outcome is contained in a recent report  from the Center, a non-partisan organization, which assembled representatives from China, India and other countries and from global industrial companies, as well as from the U.S. Senate Foreign Relations Committee staff. This diverse group agreed on the need for fresh approaches beyond Kyoto. They said the U.S. must engage all the major economies at once, including India and China, because experience has shown that countries will not move unless they can be sure their counterparts are moving with them.
The United States, the world’s richest country and the largest emitter of greenhouse gases, should seize this moment to make a new beginning by returning to international negotiations in a leadership role under the Framework Convention on Climate Change. I believe that the United States is prepared to do that. Our friends and allies should embrace this opportunity to achieve a comprehensive international approach to global warming...."
Full text of Senator Lugar's address to the Security Council 
More on the report of the Climate Dialogue at Pocantico 
Additional resources on international climate policy , including text of the Sense of the Senate resolution, S. Res. 312  (pdf), proposed by Senator Lugar with Senator Joseph R. Biden, Jr. (D-Delaware), calling for U.S. participation in international negotiations under the Framework Convention on Climate Change