Der Spiegel: NSA Hacked Mexican President's Email Updated Sunday, October 20, 4:42 p.m. One of the documents leaked by former NSA contracter Edward Snowden, and now analyzed by Der Spiegel, reveals that the NSA has been systematically spying on the Mexican government for years. In 2010, then-president Felipe Calderon's email was accessed during what was dubbed operation "Flatliquid," a discovery likely to rankle relations between the U.S. and Mexico. A top secret report reveals that the U.S. "successfully exploited a key mail server." The news comes on the heels that Snowden has more sensitive information to share, as Reuters reported earlier this week. That's according to Snowden's father Lon, who visited his son in Russia last week for the first time since the leaker of classified U.S. secrets had been granted temporary asylum there for one year. He's comfortable. He's happy. And he's absolutely committed to what he has done," Snowden's father told reporters at John F. Kennedy International Airport after returning from a weeklong visit to Moscow to see his son. Russian President Vladimir Putin has said that the country would continue to sanctuary Snowden as long as he does not continue his anti-U.S. activities. Der Spiegel