Soon after Attorney General Eric Holder announced the arrest of Iranian-American Manssor Arbabsiar in connection with an alleged Iran-directed plot to kill the Saudi ambassador to the United States, administration officials had harsh words for Iran, but many experts voiced skepticism (NYT). Kenneth Katzman, an Iran expert at the Congressional Research Service, says he and many of his peers believe that elements of the plan–such as the alleged intent to use a Mexican drug cartel to carry out the killing–simply don’t comport with what they know "about the way Iranians conduct terrorist attacks" and "the way they implement them." Katzman also notes that the attack, if it had succeeded, would have drawn a strong retaliatory U.S. response, which is something Iran "does not want."

