U.S. President Donald Trump and Iran threatened to escalate their war by attacking energy facilities in the Gulf, a potential widening of hostilities that could deepen a ?regional crisis and add to concerns in global markets.Air raid sirens sounded across Israel from the early hours of Sunday morning, warning ?of incoming missiles from Iran, after scores of people were hurt overnight in two separate attacks in the southern Israeli towns of Arad and ?Dimona.The Israeli military said hours later that it was striking Tehran in response.Trump on Saturday threatened to "obliterate" Iran's power plants if Tehran did not fully reopen…