U.S. stocks slumped on Tuesday under the weight of another jump for the price of oil. It was a return to form for financial markets after Wall Street’s worries about Israel’s fighting with Iran had seemed to calm a bit on Monday.

Oil prices rallied Tuesday after Donald Trump urged Tehran residents to evacuate, stoking fresh fears of all-out war as Israel and Iran continued to pound each other with missiles. But prices edged back up after Trump took to social media calling for the evacuation of the Iranian capital,

Wall Street opened slightly lower while oil and gold rose as Tuesday marked the fifth day of fighting between Israel and Iran, with the risk of a widening conflict dampening risk appetite in a week also packed with key central bank decisions.