Iran has a veto right over the Strait of Hormuz Barack Obama, former US president: Iran now has a veto right over the Strait of Hormuz, where oil goes to world markets. This dominance of Iran is the main reason for the increase in the price of oil in the world markets and no one can doubt this fact. Controlling this essential transition is considered the main reason for the increase in diesel prices, and for this reason the price of almost all goods in the world has increased.