On January 18, 2007. Ardeshir Hassanpour, a nuclear physicist with extensive knowledge of Iran's nuclear program is found dead in his apartment. Reva Bhalla, a senior analyst with the private intelligence firm Stratfor, believes the Israeli intelligence agency, Mossad, was behind his assassination.

"Hassanpour was someone that we deemed as critical to the program and would have been a likely target of an intelligence service like the Israeli Mossad," Bhalla said. A month later in February. Ali Reza Asgari, a top general in Iran's elite Revolutionary Guards, disappears while on a trip to Istanbul, Turkey. Some believe that he defected to the United States.

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