Iran Votes to Close Strait of Hormuz, Threatening Global Oil Supply Iran's parliament has voted to close the Strait of Hormuz, a key maritime passage through which approximately 20% of the world's daily oil supply is transported. The measure, which could disrupt an estimated 1 billion in daily oil shipments, requires final approval from Iran's Supreme Council. According to state-run Press TV, a decision is expected by the end of today. The Strait of Hormuz connects the Gulf of Oman with the Persian Gulf and is bordered by Iran to the north and Oman and the United Arab Emirates to the south. Its closure would have immediate implications for global energy markets and shipping routes. The vote follows recent U.S. strikes on Iranian nuclear facilities. Email Kosari, a commander in Iran's Islamic Revolutionary Guard Corps, said on Sunday that Iran's response "will be done whenever necessary." Global markets are closely watching for the Supreme Council's ruling, which could trigger a sharp rise in oil prices and further escalate regional tensions.