Following the escalation of tensions between the US and Iran, billionaire Hossein Shamkhani's shipping empire has seen a surge in profits as it maintains the flow of crude oil through the Strait of Hormuz. The US government's decision to lift sanctions on Shamkhani's companies has further boosted his business, with his fleet of tankers now able to transport and sell oil already loaded. This has contributed to the global shortage of oil and the subsequent price hike.