The conflict with Iran is causing a notable spike in fuel prices across the United States, with petrol now averaging $4.09 per gallon, up more than a dollar since the onset of hostilities, and diesel prices climbing to $5.53 per gallon. This surge has prompted Amazon to implement a 3.5% fuel surcharge for third-party sellers beginning April 17. Additionally, the US Postal Service is looking to impose a temporary 8% surcharge on deliveries, pending approval. Analysts highlight that these rising transportation costs could lead to broader inflationary pressures on consumer goods. Rachel Ziemba, a geopolitical risk analyst, noted that the impacts of the war are already being felt in global markets, with potential supply chain disruptions expected if the conflict persists. The situation is exacerbated by the blockage of the Hormuz Strait, which has already affected oil shipments, with Asia experiencing rationing measures and Europe facing shortages by mid-April. The US is likely to feel the effects later, with potential shortages of refined products anticipated in California by late April or May.