Why are US gas prices rising again? Iran conflict sparks fresh fuel price fears

US gas prices rose again after renewed fighting between the US and Iran disrupted oil supplies.
The national average gas price climbed from $2.98 per gallon before February 28 attacks to over $4.50 in May, then fell to $3.75, and rose again to $3.98 per gallon.
The Strait of Hormuz shipping route faces safety risks, with many companies unwilling to send ships through, threatening global oil supply.
President Trump had promised gas prices would 'drop like a rock' after the war ended, but the Iran peace deal fell apart and conflict restarted.
Americans notice gas prices more than other economic indicators because they are displayed on large signs at stations daily.
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