Eighty to ninety percent of global commerce moves by sea - including 75% of the world’s oil and almost all liquefied natural gas (LNG). So when the Strait of Hormuz shuts down, the shockwaves reach every corner of the Indo-Pacific and beyond.

In this episode, Ray Powell and Jim Carouso welcome back maritime historian Dr. Sal Mercogliano - Campbell University professor, former merchant mariner, and host of the popular YouTube channel What's Going on with Shipping? - to unpack the two-month-old crisis that has bottled up 800 ships inside the Persian Gulf and pushed the U.S. Navy to seize tankers thousands of miles away in the Indian Ocean.

Sal lays out what he calls a “tale of two blockades”: Iran rerou ...