The U.S. blockade of Iranian oil exports has entirely cut off Tehran's main source of revenue. ^[1] Three senior Iranian sources told Reuters that a U.S. campaign to throttle Iran's economy by blockading its oil exports and stopping sanctions evasion is growing increasingly difficult to withstand. ^[2] President Masoud Pezeshkian said total trade has fallen between 25% and 35%, with imports hit harder than exports. ^[3] The Iranian rial has fallen to over 2.2 million rials per dollar from about 1 million rials a year ago, as of early September 2026. ^[4] Iranian crude loadings have fallen to about 260,000 barrels a day from 1.7 million a year earlier, according to data from commodity analytics firm Kpler. ^[5] The United Arab Emirates said on August 19 that all commercial exchange and financial dealings with Tehran were halted until further notice. ^[6]