Iran sanctions risk is moving through oil, shipping and refinery networks

OFAC’s Iran sanctions page lists an April 28, 2026 alert on sanctions risk in dealing with teapot oil refineries, alongside recent general licences tied to refinery and vessel wind-down activity. For counsel, this reinforces the need to treat Iran exposure as a network problem involving oil flows, shipping, intermediaries, licences and humanitarian exceptions rather than a simple country-screening exercise.