Iran's Revolutionary Guards began naval exercises Wednesday in the Strait of Hormuz, just a few hundred kilometres away from western vessels engaged in the fight against the Islamic State group. The three branches of the elite army of the Iranian regime are participating in the regular military exercises, dubbed "Great Prophet", off Qeshm Island. State television showed an attack by "high-precision missiles" fired from the coast, and a helicopter on a replica of an "American" aircraft carrier. The Revolutionary Guards are responsible for naval forces in the Gulf, mainly composed of hundreds of speedboats equipped with various types of short- and medium-range missiles as well as small submarines.