Oil prices surged higher on Wednesday, hitting 3½-year highs, after U.S. President Trump abandoned a nuclear deal with Iran and announced the "highest level" of sanctions against the OPEC member.
Ignoring pleas by allies, Trump on Tuesday pulled out of an international nuclear deal with Iran that was agreed in late 2015, raising the risk of conflict in the Middle East and casting uncertainty over global oil supplies at a time when the crude market is already tight.
Futures extended gains after the U.S Energy Information Administration reported U.S. stockpiles of both crude oil and gasoline fell by 2.2 million barrels in the week through May 4.
Brent crude oil touched its highest since November 2014 at $77.43 on Wednesday . The benchmark contract was up $2.31 a barrel, or 3.1 percent, at $77.16 by 11:28 a.m. ET (1528 GMT).
U.S. light crude was up $2.18 a barrel, or 3.2 percent, at $71.24, after topping out at $71.36, also the highest intraday level since November 2014.