The United States was awaiting Iran's response to its latest proposed peace deal on Friday, after both sides accused the other of triggering an overnight clash that rattled markets and revived fears of a return to fighting.
Secretary of State Marco Rubio said Iran must not control the Strait of Hormuz, where the flare-up took place, but Saudi sources told AFP the kingdom had refused to allow the US military to use its airspace or bases for an operation to force open a passage for commercial shipping.