Very impressive work by the NSA, if true. Both from a political and technical perspective. It's good to know that our intelligence services are doing what they're supposed to, and doing it well.
However, as interesting as this revelation is, it's unfortunate that Snowden decided to defect to the Russians and share his stolen cache of top secret documents with them and China, using Western journalists as ideological cover. I look forward to the day when he is brought to justice for treason.