NEW YORK/GDANSK (Reuters) -Investors were on edge ahead of markets reopening late on Sunday, with risks ranging from heightened prospects of a broad Middle East war to U.S.-wide protests against President Donald Trump that threatened more domestic chaos.

Crude oil prices jumped more than 7% on Friday, hitting their highest in months after Israel said it struck Iran, dramatically escalating tensions in the Middle East and raising worries about disrupted oil supplies.

If Iran can close off the Strait Of Hormuz and the flow of oil through the Strait Of Hormuz, They can basically cause a worldwide depression. They can cause oil prices to shoot up. They have the military capability to do this.