Washington moved to tighten the screws on Iran’s oil trade again on Friday, rolling out a fresh batch of sanctions aimed squarely at the shadow fleet that keeps Tehran’s barrels moving when they’re not supposed to be. The State Department announced sanctions on 15 entities, two individuals, and 14 vessels tied to the illicit trade in Iranian crude, petroleum products, and petrochemicals. The targets were designated under Executive Order 13846, part of the Trump administration’s revived maximum pressure framework, and are…