Calm returned to Wall Street, and U.S. stocks rallied, while oil prices gave back some of their initial spurts following Israel’s attack on Iranian nuclear and military targets at the end of last week.

Oil prices fell and stocks climbed in early trading on Monday, indicating optimism among investors about the limits of economic fallout from the ongoing Israel-Iran conflict. The Dow Jones Industrial Average surged 415 points, or 1%, erasing much of the losses suffered on Friday as back-and-forth strikes broke out between the two countries.

Oil futures jumped as the market reopened Sunday night, building on last week’s surge after Israel attacked Iranian energy facilities over the weekend and underlining fears around potential disruption to Middle Eastern crude flows.