Lindsay Mills, a pole dancer who lived with Snowden, 31, before he fled the United States, moved to Moscow, Russia, to join him in July this year.Mills had initially stayed behind in Hawaii, where the two had lived together, in the wake of the political firestorm unleashed by the Snowden leaks last summer, a new documentary showed.The film shows the two cooking together in an apartment in Moscow, where he was given political asylum by Vladimir Putin's regime. Snowden now has a three-year residency permit.Snowden is wanted in the United States under the Espionage Act.Mills had remained silent and her whereabouts were largely unknown after Snowden's release of tens of thousands of classified U.S. intelligence documents in 2013.Citizenfour, made by U.S. film maker Laura Poitras, premiered on Friday in New York, revealing Mills's location in the process. The film also suggests that there could be a second NSA leaker waiting in the wings, who had access to far more information that Snowden.It came as a top spy revealed how Snowden's leaked documents have made the job of monitoring terrorists far more difficult.Sir Iain Lobban, the outgoing head of the British government's NSA equivalent, GCHQ, revealed that since the revelations it now takes three times as long to complete routine monitoring tasks.An unnamed employee made the revelation as part of the interview and profile of the GCHQ service in the Daily Telegraph.The new film is a fly-on-the wall account of Snowden's tense days in a Hong Kong hotel and his encounters with journalists from the Washington Post and the Guardian as they prepared to print protected information on NSA activities.It puts a Hollywood glamour on the former contractor, who is shown wearing contact lenses rather than his traditional glasses, and wearing mousse in his hair.It also shows scenes of his relationship with Mills immediately after the links. She is shown telling him about agents showing up at their house after he didn't go to work - and also asking why his rent checks have stopped.At one point he tells the camera 'she has no idea' - but claims he used the cover of going to Hong Kong on vacation to protect her. Citizenfour takes its title from the email alias that Snowden used when he first approached Poitras in early 2013 through a series of encrypted emails - with a view to leaking details of the top-secret programs to the media.Marketed as a 'real-life thriller,' it is the first of several films in the works about Snowden, who is wanted by the United States on charges brought under the Espionage Act.Speaking in the film, Snowden says: 'I already know how this will end for me, and I accept the risk.(dailymail.co.uk)Bakudaily.Az