Greenwald claims up to 20,000 Snowden documents are in his possession

http://rt.com/news/journalist-thousands-snowden-documents-143/

The journalist involved in the publication of leaks provided by whistleblower Edward Snowden said in a testimony to the Brazilian government that he possesses up to 20,000 secret US government files.
Glenn Greenwald testified before a Brazilian Senate foreign relations committee on Tuesday. The Brazil-based American reporter – who was approached by Snowden while the whistleblower still worked as a contractor for the NSA - has published details of US electronic surveillance programs taking place domestically and abroad. 
"I did not do an exact count, but he gave me 15,000, 20,000 documents. Very, very complete and very long," Greenwald told Brazilian lawmakers.
"The stories we have published are a small portion. There will certainly be more revelations on the espionage activities of the US government and allied governments...on how they have penetrated the communications systems of Brazil and Latin America," he said.