Oil prices climbed on Monday, extending Friday's rally, as renewed strikes by Israel and Iran over the weekend increased concerns that the battle could widen across the region and significantly disrupt oil exports from the Middle East.

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.

The sweeping attacks by Israel, which began early Friday, have killed more than 70 people, including four of Iran’s top security chiefs, and damaged Iran’s main nuclear site at Natanz. Iran retaliated by launching scores of missiles at Israel. At least three people have been killed and dozens more wounded during these attacks.