In addition to targeting suspected terrorists, it appears the National Security Agency also spent time spying on foreign heads of state.
A leaked document from the Guardian.shows that the U.S. government was spying on former Russian President Dmitry Medvedev during the London G20 summit in 2009, according to the
Apparently, the NSA document shows that U.S. spies got their hands on top-secret communications between Medvedev and his delegation and then shared the information with government officials from the U.K., Australia, Canada, and New Zealand.
The NSA document, titled "Russian Leadership Communications in support of President Dmitry Medvedev at the G20 summit in London -- Intercept at Menwith Hill station," says that agency believes it possibly discovered "a change in the way Russian leadership signals have been normally transmitted."
According to the Guardian, the document intercept came just hours after Medvedev met with President Obama at the summit and the two world leaders talked about working together on world issues, like nuclear disarmament.
The NSA is one of the biggest surveillance and eavesdropping agencies in the U.S. and was where former CIA employee andwas working when he decided to leak some of the agency's top-secret documents to the press last week.
While much of the news about the leak has centered around the NSA spying on people viaand , the agency also apparently spied on foreign governments in its classified surveillance program called PRISM. Snowden said last week that the U.S. government has also for years.
The NSA has said that the reason it carried out the secretive eavesdropping program was to track down foreign terrorists. In an unclassified document that circulated on Saturday, the U.S. government said that such surveillance hasin the U.S. and in more than 20 other countries.