Trump loves cheap gas—but a military conflict in Iran could nearly double your price at the pump

The largest U.S. military buildup since the 2003 Iraq invasion is aimed at Iran, and the outcome of a tense standoff could mean the average price at the pump falls to $2.50 per gallon or spikes astronomically to $5 in the case of war, geopolitical and energy analysts told Fortune.

The reason for the extreme range of potential impacts is the Strait of Hormuz offshore of Iran. The narrow, 104-mile strait is the main choke point separating the Persian Gulf—and the daily flow of nearly 20...