Mr. Roule said informants who work at social media companies can provide information on Iranian opposition figures, their followers and their potential funding sources.
Behdad Esfahbod, Facebook employee, forced to spy by Iran
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He also stressed that U.S. policy toward Iran has been sharply divisive on the domestic political front — a factor that may have hobbled Washington's ability to craft an effective strategy dealing with the Islamic republic.
Biden keeps pushing for Iran deal revival despite dire warnings
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