U.S. stocks slumped under the weight of a jump for the price of oil. The S&P 500 fell 0.8% Tuesday following signals that Israel’s conflict with Iran may be worsening and that one of the U.S. economy’s main engines is weakening.

European stock markets opened broadly lower on Thursday, with the regional Stoxx 600 index retreating as investors continued to grapple with heightened geopolitical tensions.

Oil prices surged, stocks dropped and investors flocked to safe havens like gold on Friday after tensions between Israel and Iran escalated, stoking concerns of a broader conflict in the region.