Top Iranian officials have said they might close the Strait of Hormuz, a move that would disrupt world oil supplies. Iran recently held military exercises in the region to show Tehran's fire power.
Iran's Navy Commander Habibulah Sayari points at a map during a news conference in Tehran December 22, 2011 before Iran's navy launched a 10-day war game in the Strait of Hormuz. (Reuters)
Iranian Navy speed boats attend a drill in the sea of Oman, on December 30, 2011. (AP)
Iranian military personnel participate in war games on the Sea of Oman near the Strait of Hormuz in southern Iran December 28, 2011. (Reuters)
Iranian naval ships take part in a naval parade on the last day of the Velayat-90 war game in the Sea of Oman near the Strait of Hormuz in southern Iran January 3, 2012. (Reuters)