Iran says oil blockade will continue until attacks end, Trump threatens to hit harder
By Parisa Hafezi, Enas Alashray and Kanishka Singh
DUBAI/CAIRO/WASHINGTON, March 10 (Reuters) - Iran's Revolutionary Guards said on Tuesday they would not allow "one litre of oil" to be shipped from the Middle East if U.S. and Israeli attacks continue, prompting a warning from President Donald Trump that the U.S. would hit Iran much harder if it blocked exports from the vital energy-producing region.