Asian shares rose 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 71 cents to $73.

Crude oil futures jumped more than 3% Sunday after Israel struck two natural gas facilities in Iran, raising fears that the war will expand to energy infrastructure and disrupt supplies 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.