In-house newsletters from the clandestine National Security Agency have been released by an online news site — part of the mountain of documents leaked by former NSA contractor Edward Snowden.

An online news site, The Intercept, whose founding editors were the first to publish documents leaked by Snowden, released the newsletters Monday. The first batch of nine years' worth of the newsletters offers a behind-the-scenes glimpse into the NSA's work.

The newsletters reveal their efforts to eavesdrop on a Russian crime boss, the search in Iraq for possible weapons of mass destruction, and help with interrogations at the U.S. military prison at Guantanamo Bay, Cuba.

Snowden leaked details of a secret government eavesdropping program in 2013. In Russia now, he faces charges that could mean 30 years in prison.