U.S. intelligence officials, already focused on Iran’s potential for building nuclear weapons, are struggling to solve a more immediate mystery: the murky relationship between the new Tehran leadership and the contingent of Al Qaeda leaders residing in the country. Some officials, citing evidence from highly classified satellite feeds and electronic eavesdropping, believe the Iranian regime is playing host to much of Al Qaeda’s remaining brain trust and allowing the senior operatives freedom to communicate and help plan the terrorist network’s operations. Full Story