Iran shows off its military hardware as it conducts another day of naval exercises.<br/> State TV showed ships, helicopters, hovercraft and submarines being put through their paces.<br/> The tests are part of 10-day manoeuvres in international waters, which have taken place for at least four days.<br/> They are being conducted in the Strait of Hormuz, the world's most strategic oil transit channel.<br/> The military drill comes as tension between the West and Iran is escalating over the Islamic state's nuclear programme.<br/> Iran said in the past it would respond to any attack by targeting U.S. interests in the region as well as closing the strait.<br/> But Iranian authorities have given no indication the strait will be closed during the exercise, and it has not been shut during previous drills.<br/> Lily Grimes, Reuters
