Sometimes I wonder why is this even "news". Or "newsworthy". Every government is involved with espionage. It is just part of statecraft. That is just lazy journalism, I mean I could be a journalist too... "Whitehouse spies on Kremlin, officials deny that anything important was stolen (because that just makes them look incompetent)". "China spies on India", "Iran spies on Israel"... Heck "My neighbour spies on me (to find out why my melons look better)". Successful espionage by its very definition does not get public airtime.