A leading German news magazine says the U.S. National Security Agency, NSA, has eavesdropped on the United Nations, penetrating the world body's internal video conference system to decode data. Der Spiegel, in a report Sunday, linked its latest U.S. spy claim to secret files released by fugitive former U.S. intelligence contractor Edward Snowden. The report did not say when the magazine acquired the information, or whether it came directly from Snowden. It alleges the spying took place in mid-2012.