According to documents published by WikiLeaks this week, the NSA spied on multiple world leaders on behalf of oil companies. The documents revealed that the NSA spied on the private meetings of world leaders such as UN chief Ban Ki-moon, German Chancellor Angela Merkel, and other European politicians.
The discussion between Ban Ki-moon and Merkel was involving environmental pollution and the impact that fossil fuels had on the environment, and according to the WikiLeaks release, the NSA was listening in for the purpose of collecting information for oil companies.