Iran has sparked fear it could close another strait dubbed the "Gate of Tears" after it threatened retaliation for the US blockade of the Strait of Hormuz. Iran's parliament speaker Mohammad Bagher Ghalibaf threatened Tehran could shut the Bab al-Mandeb, also known as the Gate of Tears, a stretch known for its hazardous navigation. The strait leads into the vital Red Sea shipping lane, which handles about 15 per cent of all global maritime trade and saw an estimated 21,340 ships pass through in