THIS HAS BEEN A LONG TIME COMING, WITH PLENTY OF BLAME TO GO AROUND WASHINGTON, THE PENTAGON, AND THE NAVY ITSELF: U.S. Naval Deterrence Is Going, Going, Maybe Even Gone.

This was only one of several recent assaults on American naval assets in the region. They have happened despite the presence of the Ford carrier strike group in the eastern Mediterranean and the Eisenhower strike group in the Gulf of Aden—a conventional level of naval deterrence that should have reduced aggressive activities by U.S. enemies. Instead, Iran attacked American ships and allies.

These events show that American naval deterrence is failing, and a recent report from the Sagamore Institute concludes that it could soon evaporate.

The report, “Measuring and Modeling Naval Presence,” models the effect of various ships and combinations of ships across a mix of maritime regions. The model pitted an Arleigh Burke-class destroyer, the U.S. Navy’s current utility platform of choice, against a People’s Liberation Army Navy Luyang III destroyer in several locations ranging from the high seas to the waters approaching the Taiwan Strait. It suggested that the deterrent value of American Navy ships operating in close proximity to a determined adversary has recently declined.

While the report said the American Navy currently maintains “presence dominance,” the ability to maintain its values and interests upon the high seas, it also indicates that the U.S. margin of naval leadership is shrinking and America could swiftly lose its ability to maintain mare liberum, the free sea. This would have huge negative implications for the global economic system, which depends on open seas to move 80% of the volume of the world’s $100 trillion global domestic product.

Read the whole thing.