Gas prices fall below $4 on average after Trump’s signing of Iran deal to end war The GuardianAverage U.S. Gasoline Price Falls Below $4 for First Time in Months The New York TimesGas prices fall under $4 as Trump signs deal to reopen Strait of Hormuz The Washington PostU.S. Stocks Poised to Close Week on Strong Note WSJGas prices fall below $4 per gallon as oil supply fears ease after Iran deal CNBC