The remote-controlled SeaFox hunts mines
                                
                                
                                    (Newser) -
                                    As tensions worsen with Iran, the US is adding a new weapon to its Persian Gulf arsenal: the underwater drone. Called the SeaFox, it's a 4-foot-long, remote-controlled submarine capable of hunting for undersea mines and detonating them, reports the  Telegraph . Iran has been threatening to blockade the Strait of...