The lethal June 7 terror attack in Tehran that left 18 people dead was carried out by ISIS. Not unexpectedly, Iran vowed revenge. On June 17-18, this revenge materialized in the form of a volley of Iranian precision ballistic missiles fired at ISIS strongholds in the Syrian town of Deir ez-Zor. The Islamic Republic exploited the event to flex its missile muscles, a display designed to broadcast that it is a force to be reckoned with on a par with Russia and the US. It can project power hundreds of kilometers away from its borders and has the willpower and resolve to use force to promote its interests in the region.