This is Matt Drudge's headline about the outing of a previously undisclosed Iranian nuclear facility. Here's what the story he links to says: "White House officials said Western intelligence agencies have been tracking the facility for years."

Also, from the New York Times:

American officials said that they had been tracking the covert project for years, but that Mr. Obama decided to disclose the American findings after Iran discovered, in recent weeks, that Western intelligence agencies had breached the secrecy surrounding the complex.