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Oil prices moved higher on Thursday after the U.S. launched a "heavy wave" of strikes against Iran late Wednesday in retaliation against its missile attacks on American forces in the region, dashing hopes for de-escalation.
Iran's Islamic Revolutionary Guard Corps has threatened further escalation in response.
Brent crude futures, the international benchmark, gained 1.5% to $92.10 a barrel. U.S. West Texas Intermediate futures advanced 0.9% to $85.23 per barrel.
The resumption of strikes marks the latest turn in a conflict that has whipsawed oil markets and disrupted shipping through the Strait of Hormuz since fighting erupted in late February. The U.S. had halted two weeks of fire against Iranian targets last weekend, as diplomats sought to give peace talks "space."
But Trump telegraphed the retaliation hours earlier, warning to order heavy strikes on Iran. "We'll be hitting them hard. They're going to get a beating," Trump told a Fox News reporter early Wednesday.
U.S. Central Command described the operation as a "powerful response" to Tuesday's attempted Iranian attacks on U.S. forces in the Middle East.
The two-hour-long attacks saw the U.S. hit dozens of Islamic Revolutionary Guard Corps targets across Iran, including military command centers, missile and drone facilities, coastal surveillance and defense sites, and maritime capabilities, Centcom said.
Traders are looking ahead to the OPEC+ meeting on Sunday, during which the group of oil producers is expected to announce a supply increase of 188k barrels per day for September.
"The big uncertainty through 2027 will be around the group's policy, with the potential for pushback on output quotas," ING strategists wrote in a note on Wednesday.
— CNBC's Anniek Bao and Sam Meredith also contributed to this report.
