The national average price for regular gasoline climbed back to $4 per gallon on Monday, a renewed milestone for drivers as oil prices surged more than 15% over the past week. The jump reflects growing strain in global energy markets and the speed with which geopolitical unrest can feed into fuel costs.

According to the report, renewed conflict involving Iran and attacks tied to the Ukraine-Russia war have unsettled traders and pushed crude prices higher. When oil rises sharply in a short period, gasoline prices often follow, adding pressure to household budgets and travel costs.

The move back to $4 a gallon highlights how sensitive fuel prices remain to overseas developments. Even when changes begin in global crude markets, consumers tend to feel the impact quickly at the pump as refiners and retailers adjust to higher input costs.

With tensions in key regions rattling energy markets, gasoline prices are once again becoming a central concern for consumers and businesses watching transportation and operating expenses. The latest increase underscores how events abroad can rapidly influence everyday costs across the United States.