The targeted killing by the United States in early 2020 of Qasem Soleimani, Commander of the Revolutionary Guards Quds Force, was a severe blow to Iran’s ability to score further achievements in its campaign to export the Islamic Revolution and expand its influence throughout the Middle East. Soleimani saw himself as the defender of the Revolution’s values and the rule of the ayatollahs, worked in their name while not hesitating to make independent decisions, and formed close personal ties with leaders, commanders, and other influential figures in the region. Soleimani was able to understand the weaknesses of the regional system, and developed his own creative approach to utilize Iran’s strengths and expand its regional influence, mainly by means of proxy forces. For two decades he was the strategic architect of Iran’s expansion in the Middle East, and his loss leaves Supreme Leader Ali Khamenei, who had groomed Soleimani, without a replacement of similar stature.