On April 8, the Trump administration designated the Islamic Revolutionary Guard Corps (IRGC), Iran’s elite military force, as a foreign terrorist organization. The reaction in Tehran was stern and swift. From Supreme Leader Ali Khamenei, who called the designation evidence of American “rancor” and helplessness against the IRGC, to members of the Iranian parliament who put on IRGC uniforms to show solidarity with the organization, the authorities in Iran have leaped to show unity in the face of a historic U.S. decision. Even Iranian Foreign Minister Mohammad Javad Zarif, a man with a tense relationship with the IRGC, came to the corps’ defense. Zarif openly suggested that Iran should retaliate by declaring U.S. Central Command to be a terrorist entity, a decision that was announced by Tehran a few hours later.