The US Navy's Fifth Fleet in Bahrain said on Thursday there was "no way to know" if a threat radioed to US warships in the Strait of Hormuz came from Iranian speedboats, casting doubt on the earlier US version of Sunday's confrontation. "There is no way to know where this (radioed threat) exactly came from. It could have come from the shore... or another vessel in the area," Lieutenant John Gay told AFP by telephone. But he stressed that "the Iranian fastboats were acting in a very provocative and aggressive manner" towards the US warships in the strategic waterway at...