NSA caused Copenhagen Climate summit 2009 failure

Knowing that in the worst case the Danish negotiators would make big concessions to the USA, Obama and the American delegation just laid back without making any concessions. Through secret documents gathered by the NSA and probably GCHQ they already knew how far the other delegations would go to avoid a failure of the conference.

http://www.huffingtonpost.com/2014/01/29/snowden-nsa-surveillance-_n_4681362.html

http://www.faz.net/aktuell/politik/ausland/snowden-dokumente-nsa-soll-klimakonferenz-ausgespaeht-haben-12778333.html