TOPIC VIDEO: PRIVACY

1. The person who has revealed himself as the whistleblower is a former CIA official.

2. The NSA has been collecting the phone records of millions of Americans to find out if militant suspects have been in contact with people in the US.

3. Snowden believes that it's fundamentally dangerous to democracy to subvert the power of government.

4. He wants to go on the record to defend the authenticity of his disclosures.

5. The journalist he spoke to, Greenwald, believes that on some level he must be anxious about what may happen to him.

6. Most likely, he will be charged by the US government and extradited from Hong Kong.