“Iran was a particularly important target for NSA [National Security Agency] after the fall of Baghdad. According to a former NSA official, the agency was able to read much of the sensitive communications traffic of Iran’s Ministry of Intelligence and Security (MOIS), which gave U.S. intelligence analysts some vivid insights into Iranian policy on Iraq, as well as details of Iranian clandestine intelligence operations inside Iraq. But according to news reports, this extremely sensitive NSA program was badly damaged in the spring of 2004 by none other than America’s longtime ‘expert ally’ against Saddam Hussein, Ahmed Chalabi, the leader of the Iraqi National Congress (INC). These reports stated that Chalabi and other senior members of the INC had secretly provided Iranian intelligence officials with details of U.S. political and military plans in Iraq, and NSA intercepts reportedly showed that the head of the INC intelligence organization, Aras Habib, was on the payroll of the Iranian intelligence service. Based on this intelligence information, on May 20, 2004, U.S. troops raided Chalabi’s home and the offices of the INC in Baghdad.”
– Matthew M. Aid, The Secret Sentry, Page 270