Iran’s “Tareq” submarine

An Iranian submarine takes part in a naval parade at the conclusion of the maneuvers in the Gulf and Sea of Oman, Thursday, April 6, 2006. The Revolutionary Guards, the elite branch of Iran’s military, have been holding their maneuvers _ code-named the “Great Prophet” _ since Friday, touting what they call domestically built technological advances in their armed forces. (AP Photo/Mehr News, Sajjad Safari)

Iran’s initial steps to build nuclear submarine