It has been said that summits are either 'successful' or 'very successful'. The time has come to face the facts: this is wrong! That is not to say that Copenhagen was a failure, but merely that it could have done better, but still probably passed the test. The final verdict will depend on what happens next. The report by Benito M¸ller looks at the UN Climate Change Conference in Copenhagen and evaluates what happened and suggests what lessons ought to be learned.