In my opinion Iran is behind every terrorist act. Ever since the Islamic revolution happened and the regime came to power, we hear Iran's name in the news. Khomeini, Khamenei, Rafsanjani, Khatami, Ahmadinejad, ... Iran became a state-sponsoring terrorism since the inception of the Islamic republic. Otherwise why does the regime have meetings with the Syrian President and Mugniyah?
Bill Roggio: "Mugniyah has extensive links with the Iranian intelligence services, and has been directly linked to al-Qaeda and Osama bin Laden, and recently deceased al-Qaeda in Iraq commander Abu Musab al-Zarqawi. Mugniyah is on FBI's list of 22 most wanted terrorists, with a $5 million dollar reward for information leading to his capture. U.S. Special Forces aborted a raid to capture Mugniyah in the Persian Gulf in 1996. He was believed to have visited Syria in January of 2006, attending a meeting with Iranian President Ahmadinejad and Syrian President Assad."