At least three Iranian tankers carrying nearly five million barrels of crude oil have exited the U.S. Navy blockade in the Strait of Hormuz in the first such outbound shipment in two months, as shipowners cautiously reposition ahead of a U.S.-Iran deal signing in Geneva on Friday. Two supertankers named Diona and Hero 2 — both owned by the National Iranian Tanker Company and under U.S. sanctions — made it through the U.S. Navy blockade perimeter, carrying a combined total of 3.8 million barrels