My diagram starts with the root cause of this entire issue: carbon emissions causing climate change. This is an unsustainable behavior which requires some form of global action to solve. That is where the Copenhagen accord comes in. The main issue is how the United States is using political and financial pressure to get nations on board to sign the accord. The United States is the worst offender of the polluters according to the article, and many nations are not on board with the accord as it favors the United States over less developed nations who have felt the negative effects of global warming but have not actually caused it. They feel that money should be given to them by nations in order to make up for the fact that these other nations have harmed them. They view the money as a right not a privilege. These nations are not complying the the United States wishes, so the United States is using the information contained in the secret cables as ways to convince or blackmail these other nations. The United States is using political and financial pressure on other nations in order to get the Copenhagen accord passed in a way that makes it seem well supported. By doing this in secret, they are concealing the truth from the world and obscuring the real reason for the accord. Other nations are being subject to these pressures to in order to get them on board to the accord. The Secret Cables connect to the small nations and others which is why they are coming from the U.S. in support of the Copenhagen accord.
I believe that the cables probably should not have been made public in the way they were but now that they have been it is best to acknowledge the problems and move forward. There is a reason government secrecy exists in most cases. The people making these decisions have more training, experience, and information than we will ever have so we can criticize as much as we want but they probably know what they are doing to a large extent. As for the diplomacy being used, I believe there probably is not much alternative. Other nations are getting money for a reason: it is the only way to solve the problems they have with the accord. The United States is not looking to give away with money. The idea behind diplomacy is to give something you have to get something that you want. The United States exerting political and financial pressure is pretty much exactly what they should be doing diplomatically. As long as you agree that the accord is a good thing, getting nations to support it using these tactics probably is good not bad. However, plenty of people inherently distrust the government and also a lot of the world does not like the United States political power. Overall, the diplomacy is a bit shady and backwards but probably is the best thing for the United States in reference to the Copenhagen accord.