12 August 2012, two Japanese Self-Defense Force (JSDF) mine sweepers left for military exercises with the U.S. Navy in the Persian Gulf.

The Uraga and Hachijo will join the USN for mine sweeping operations that begin on 16 September.  20 other navies will take part in the operation.

About 90% of Japan’s petroleum comes from the Persian Gulf area, through the Strait of Hormuz.