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.

Stocks sank under increasing pressure from crude oil prices, which climbed in their latest see-saw move. A barrel of benchmark U.S. crude jumped 4.5% to $73.42. Brent crude, the international standard, added 4.5% to $76.54 per barrel.

NEW YORK (AP) — Some calm is returning to Wall Street, and U.S. stocks are rising on Monday, while oil prices are giving back some of their initial spurts following Israel’s attack on Iranian nuclear and military targets at the end of last week.