On Monday, Glenn Greenwald, who as a writer for Britain's Guardian met face-to-face with the fugitive Snowden and has written or co-authored many of the newspaper's stories based on his material, was asked in an Israeli television interview whether the ex-contractor had more secrets to tell that related to Israel.
"Yes. I don't want to preview any stories that aren't yet published, but it is definitely the case that there are a huge number of very significant stories that are left to report," said the Brazil-based Greenwald, speaking to Channel Ten TV by video link.
"We have only had these documents for seven months, which, given their volume and complexity, is not a very long time. There definitely are stories left that involve the Middle East, that involve Israel. The reporting is going to continue at roughly the same pace that has been happening."
Among allegations aired by Snowden last year were that the US National Security Agency (NSA) and its British counterpart Government Communications Headquarters (GCHQ) had in 2009 targeted an email address listed as belonging to then-Israeli Prime Minister Ehud Olmert and monitored emails of senior defense officials.
An investigation by several European newspapers last year revealed that the US and British spy agencies rely on a data transmission center in Cyprus to intercept phone and Internet records from users in the Middle East.
The probe identified the Ayios Nikolaos surveillance station, located on a British military base in Eastern Cyprus, as the Middle East's main spy hub.
NTJ/BA