Oil prices jump on possible Iranian supply disruption

Oil prices surged by about 3% on Tuesday as the prospect of disruptions to Iranian crude exports overshadowed possible increased supply from Venezuela.

Brent futures jumped $1.88, or 2.9%, to $65.75 a barrel by 11:07 a.m. EST (1607 GMT), hovering around a three-month high. U.S. West Texas Intermediate crude climbed $1.79, or about 3%, to $61.29.

"The oil market is building in some price protection against geopolitical drivers," said PVM Oil Associates analyst John Evans, highlighting the potential exclusion of Iran's exports, trouble around Venezuela, talks on the Russia-Ukraine war and over Greenland.

Iran, one of the top producers in the Organization of the Petroleum Exporting Countries, is facing its biggest anti-government demonstrations in years. A government crackdown against protesters that an Iranian official says has killed about 2,000 people and led to the arrest of thousands more, drew a warning from U.S. President Donald Trump of possible military action.

Trump said on Monday that any country that does business with Iran will be subjected to a tariff rate of 25% on any business conducted with the United States.

"The tariff hike would primarily affect Iranian crude flows to China and India in potentially forcing Asian customers to seek alternative barrels in propping up international crude prices," said analyst Jim Ritterbusch of Ritterbusch and Associates.