Iran has, for decades, issued threats of closing the Strait of Hormuz over conflicts with countries in the Middle East and sanctions like those imposed by the US. The long history of tensions dates back to Iran's 1980-88 war with Iraq.Ebrahim Azizi, who chairs the Iranian Parliament's national security and foreign policy committee, said that Tehran's authority over the Strait is an "inalienable right". (AP)Iran's closure threats have never come to fruition until the February 28 joint US-Israeli strikes against the Islamic Republic prompted it to actually 'shut' the strategic waterway.Today, a US naval blockade amid the already-imposed closure by…