At the beginning of September 1983, Hizbullah, with the help of the Revolutionary Guard headed by Dehghan, took over the Sheikh Abdullah barracks, which was seized in the course of a procession led by three Hizbullah sheikhs: Abbas Mussawi, Subhi Tufayli, and Muhammad Yazbek. It had been the main base of the Lebanese army in the Beqaa Valley and now became the Imam Ali barracks, the main headquarters of the Revolutionary Guard.

It was from this headquarters that Iran controlled Hizbullah’s military force and planned, along with Hizbullah, the terror attacks on the Beirut-based Multinational Force and against IDF forces in Lebanon. The attacks were carried out by the Islamic Jihad organization, headed by Imad Mughniyeh, which was actually a special operational arm that acted under the joint direction of Tehran and Hizbullah until it was dismantled in 1992.

Instructions for the attack on the Multinational Forces were issued from Tehran to the Iranian ambassador to Damascus, who passed them on to the Revolutionary Guards forces in Lebanon and their Lebanese Shiite allies. According to the U.S. Marine commander, the U.S. National Security Agency (NSA) intercepted the Iranian orders to strike on September 26, 1983. It is difficult to imagine that such a high-level directive to the Revolutionary Guards in Lebanon would be transmitted without the knowledge of their commander, Hossein Dehghan.

On October 25, 1983, a Shiite suicide bomber detonated a water tanker at the U.S. Marine barracks in Beirut, killing 241 Marines; simultaneously, another Shiite suicide bomber blew up the French paratroopers’ barracks in Beirut, killing 58 soldiers. It was Mughniyeh who dispatched both bombers. The order to carry out the attacks was transmitted, and the funding and operational training provided, with the help of the Revolutionary Guard in Lebanon under the command of Hossein Dehghan.