Oil prices were steady on Tuesday, supported by worries over conflict between Iran and the United States but pressured by concerns about a potential decline in demand for crude.
Benchmark Brent crude futures were up 3 cents at $64.89 a barrel by 0034 GMT. They rose 0.5% on Monday.
U.S. crude futures were down 3 cents at $57.87 a barrel. The U.S. benchmark declined 0.8% in the previous session.
Brent rose 5% last week and U.S. crude surged 10% after Iran shot down a U.S. drone on Thursday in the Gulf, adding to tensions stoked by attacks on oil tankers in the area in May and June. Washington has blamed the tanker attacks on Iran, which denies having any role.
U.S. President Donald Trump targeted Iranian Supreme Leader Ayatollah Ali Khamenei and other top Iranian officials with sanctions on Monday, taking an unprecedented step to increase pressure on Iran after Tehran's downing of the drone.