As U.S. strikes on Iranian nuclear facilities drive fears of retaliation, it remains to be seen whether Iran will try to block oil trade via the Strait of Hormuz.

The Iranian parliament backed a move to close a major oil and gas route, after American airstrikes in the country.

The Iranian parliament is moving to close the Strait of Hormuz following the U.S. attack on three of the country's nuclear sites, according to Iranian state-owned media organization Press TV. About 20% of the world’s oil flows through the Strait of Hormuz,