Petrol prices in the US have climbed back to a nationwide average of $4 per gallon (3.8 litres) as the US and Iran continue to trade attacks, Al Jazeera reports.
Citing data from the AAA motor club, the agency said the national average for petrol has returned to the $4 mark, up from $3.14 per gallon at this time last year.
As a nationwide benchmark, that average means drivers in several states are already paying more than $4 per gallon, with regional prices varying based on local fuel supply and state taxes.
