The Tanker War and Operation Earnest Will (1987-1988)
During the Iran-Iraq War, both sides attacked oil tankers in the Gulf. The US reflagged Kuwaiti tankers as American and escorted them through the strait. Clashes followed, including the 1988 Operation Praying Mantis, the largest US surface naval battle since World War II.
US escorts kept oil moving and damaged Iran's navy. The fighting raised the risk of wider war in the Gulf.
It set a precedent for the US Navy policing Gulf shipping lanes, a role it has played in some form ever since.
It shows the US using naval force to keep oil flowing on its terms in the same waters, and how quickly tanker clashes can escalate.
