As the first wave of visitors, delegates and speakers arrive in Rio for the Rio +20 sustainability summit, the overall picture is still unsettled. The persons charged with drafting a possible International Agreement to come out of the conference have still not settled on a straightforward document. Disagreements remain over how to measure national progress on sustainability and economic development, and how strong to call for an end to “destructive” government subsidies. Despite this disagreement, many delegates and commentators remain hopeful that some specificity can be reached. The more hopeful even envision a major breakthrough on environment, energy, and economic development.
Over 100 heads of state are expected, and Hillary Clinton is listed as the head of the U.S. delegation. Whether or not President Obama comes is still an open question.