Should Iran’s military called ’terrorist’?

Lose Angeles Times on Oct. 20, wrote that the U.S. Congress and Senate both want the administration to officially deem Iran’s Revolutionary Guard terrorists.
No nation’s armed forces have ever been formally labeled “terrorist,” though Iran has been on the State Department’s list of countries that sponsor terrorism since 1984. Such a designation for the Revolutionary Guard would be a radical move that could have unforeseen consequences.
Moreover, the terrorist designation would make it even more difficult to find senior Iranian leaders who could negotiate with the United States or Europe.
Rather than risking over-broad new sanctions, it would be wiser for the Treasury Department to target those Iranian officials known to be involved in terrorist activities or in specific business ventures whose proceeds fund the country’s nuclear program. Or it might focus on specific units of the Guard, such as the notorious Quds Force, which is accused of arming Iraqi insurgents.