The price of international benchmark Brent crude surpassed $100 per barrel on Wednesday, reaching a high not seen since late May, after the United States military destroyed five Iranian oil tankers and triggered retaliatory missile and shipping strikes from Tehran.
The surge past the $100 psychological threshold—hitting $100.19, and crossing $101—reflects escalating hostilities across the Middle East that have reignited energy-driven inflation fears. The renewed confrontation follows attempts by Iran to attack U.S. warships with ballistic missiles, prompting U.S. Central Command to launch overnight operations against the Iranian crude carriers.
### Retaliation and Regional Escalation
Iran’s state media reported that Tehran targeted U.S. assets across the region in response to the American strikes on its oil fleet. Jordan’s military intercepted 18 Iranian missiles on Wednesday, with no casualties reported.
U.S. Secretary of State Marco Rubio stated that Washington will keep hitting Iranian oil tankers in response to attempted attacks on U.S. warships. Meanwhile, Swissquote senior analyst Ipek Ozkardeskaya told Reuters that market optimism regarding a summer peace agreement has faded with the arrival of September.
### Market Strain and Central Bank Pressures
The rising cost of crude has pressured global equity markets. Wall Street’s three main indexes—the S&P, the Dow and Nasdaq—saw small losses, while European stocks dropped to one-week lows, led by industrial and banking sector declines.
Societe Generale multi-asset strategist Manish Kabra noted that while $100 serves as a psychological threshold, crude would likely need to reach $150 to create a major drawback in the global demand cycle. The climb in diesel prices has intensified concerns that central banks will adopt more restrained monetary policies. The European Central Bank is expected to hike interest rates on Thursday, and the U.S. Federal Reserve is set to meet the following week, amid multidecade-high bond yields in the U.S., Japan, and Europe.
### Shipping Constraints and Inventories
Commercial traffic through the Strait of Hormuz will remain constrained through the end of 2026, according to a U.S. Energy Information Administration (EIA) projection. The agency estimates that an average of 5.7 million barrels of oil per day will remain shut in, with pre-war export levels unlikely to return until the second quarter of 2027.
The EIA reported that global inventories have dropped by approximately 400 million barrels so far this year due to falling global inventories and ongoing disruptions from the U.S.-Iran conflict.
### International Developments and the IAEA
Concurrently, diplomatic tensions deepened at the United Nations atomic watchdog. Iran condemned a resolution adopted by the International Atomic Energy Agency’s (IAEA) board of governors, which referred Tehran to the U.N. Security Council over nuclear non-compliance.
“This resolution was passed under political pressure from the US and its allies and in our view has no basis and will not bring any results,” Reza Najafi, Iran’s representative to the IAEA, told state television. Deputy Foreign Minister Kazem Gharibabadi criticized the U.S. on social media for disrupting verification processes at safeguarded facilities.
