ToplineGasoline prices in the U.S. rose above $4 per gallon early on Tuesday, breaching the mark for the first time since 2022, amid the global spike in crude oil prices triggered by the U.S.-Israel war against Iran. U.S. gas prices have rise more than 34% since the start of the Iran war and they crossed the $4 mark for the first time since 2022.Getty ImagesKey FactsAccording to AAA’s national fuel prices tracker, average gas prices in the U.S. stood at $4.018 per gallon on Tuesday morning, a nearly 35% increase compared to the previous month.Gas is now at its highest level since August 2022, when prices surged in the aftermath of Russia’s invasion of Ukraine.The global benchmark Brent Crude futures stood at $112.66 per barrel early on Tuesday and it has remained above $110 in the past few days as Trump’s remarks about peace talks with Iran have failed to alleviate oil supply concerns. On Monday, the U.S. crude oil benchmark West Texas Intermediate settled above $100 per barrel for the first time since the start of the Iran war.Diesel Prices Also SurgeDiesel prices in the U.S. have seen an even steeper surge than gasoline, with the national average rising to $5.454 per gallon early on Tuesday, according to AAA’s tracker. This is a 45% increase compared to the previous month. Diesel is used to fuel heavy vehicles like trucks, freight trains, tractors, other farm machinery and construction equipment. The spike in diesel prices is likely to affect prices across everything, including groceries, farm goods and shipping costs for online purchases.TangentAfter the U.S.-Israeli strikes on its territory, Iran has retaliated by targeting major oil-producing Gulf states that are allied with the U.S. and by blockading the Strait of Hormuz. The strait is used to transport around 20% of the world’s oil and it has remained closed to most shipping since the start of this month. In the past few weeks, President Donald Trump has threatened to destroy Iran’s power plants and oil production sites if it doesn’t reopen the strait and agree to his peace terms. The most recent of these threats was made on Monday morning, where Trump warned Iran he will be “blowing up and completely obliterating” the country’s energy plants, oil wells and the crucial Kharg Island if a deal to open the shipping route doesn’t happen soon. Tehran appears to have largely brushed off these threats, and on Tuesday, it attacked a Kuwaiti oil tanker anchored in Dubai.Further ReadingTrump Boasts He’ll Blow Up Iran’s Power Plants And Oil Wells If Hormuz Strait Deal Not ‘Shortly Reached’ (Forbes)