Iran orders closure of Strait of Hormuz — putting one-fifth of world’s oil supply at risk admin 6 hours ago USA Update Comments Off on Iran orders closure of Strait of Hormuz — putting one-fifth of world’s oil supply at risk 0 Views Iran’s parliament has voted to close the Strait of Hormuz, the vital shipping channel through which around 20% of the world’s daily oil flows. Share Facebook Twitter Stumbleupon LinkedIn Pinterest