Kharg Island, the tiny speck in the Persian Gulf that handles roughly 90% of Iran’s crude oil exports, has gone quiet again. How the blockade worksUnder normal sanctions-era conditions, Kharg Island processes between 1.1 and 1.5 million barrels per day. The physical infrastructure on Kharg Island remains largely intact. US forces struck Iranian military installations on Kharg Island in March and April, but notably avoided targeting the oil infrastructure itself. What this means for oil marketsIran’s Kharg Island typically contributes 1.1 to 1.5 million barrels per day to global supply.