On the third day of military drills, the Islamic Republic of Iran's navy successfully launched a cruise missile from a submarine in the Persian Gulf.
The drill was part of a weeklong military drill named Velayat 97, after the current Iranian calendar year 1397 (ending March 20, 2019). The exercise took place in the Strait of Hormuz, an important strait between the Persian Gulf and the Sea of Oman in which a large percentage of the world’s oil passes through — a point Iranian officials periodically remind the world when responding to attempts to embargo Iranian oil.