Developing countries have reacted angrily to revelations that the United States spied on other governments at the Copenhagen climate summit in 2009.
Documents leaked by Edward Snowden show how the US National Security Agency (NSA) monitored communication between key countries before and during the conference to give their negotiators advance information about other positions at the high-profile meeting where world leaders including Barack Obama, Gordon Brown and Angela Merkel failed to agree to a strong deal on climate change.
Jairam Ramesh, the then Indian environment minister and a key player in the talks that involved 192 countries and 110 heads of state, said: "Why the hell did they do this and at the end of this, what did they get out of Copenhagen? They got some outcome but certainly not the outcome they wanted. It was completely silly of them. First of all, they didn't get what they wanted. With all their hi-tech gizmos and all their snooping, ultimately the Basic countries [Brazil, South Africa, India and China] bailed Obama out. With all their snooping what did they get?"
Martin Khor, an adviser to developing countries at the summit and director of the South Centre thinktank, said: "Would you play poker with someone who can see your cards? Spying on one another like this is absolutely not on. When someone has an upper hand is very disconcerting. There should be an assurance in negotiations like this that powerful players are not going to gain undue advantage with technological surveillance.