Asian shares were mixed on Monday and oil prices extended gains on worries that escalating Iran-Israel tensions could disrupt the flow of crude around the world. U.S. benchmark crude oil added 20 cents to $73.

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.

U.S. oil prices already jumped last week, which could cause prices at the pump to rise about 20 cents a gallon in the coming weeks, according to one estimate.