Iran is testing missiles near the Strait of Hormuz, underlining threats to close the vital oil-transit waterway as the West prepares more sanctions.
Iran has test-fired a new long-range missile during naval exercises, after threatening to halt oil shipments through the Strait of Hormuz.
Iran and the representative of six world powers talked by telephone on Monday over Tehran’s disputed nuclear programme.
Iran’s army chief warned on Saturday that the Islamic republic would shut the Strait of Hormuz if its interests were threatened.