Oil prices surged sharply on Monday following the first direct military exchange between American and Iranian forces in about a month, with investors factoring in renewed escalation risks. Brent crude futures climbed above the $90 per barrel mark, while the international benchmark briefly touched highs above $91, representing a gain of more than 2% and marking the first time in roughly a week that it has crossed the $90 threshold. Simultaneously, US benchmark West Texas Intermediate (WTI) crude futures advanced approximately 4%, trading above $86 per barrel.

Prices jumped at the opening of Sunday evening trading after reports emerged that US forces had struck Larak Island in the Strait of Hormuz. US Central Command stated that Iranian military personnel were preparing to launch rockets carrying naval mines into the vital shipping lane. Larak Island, situated at a strategic chokepoint, serves as a key surveillance and waterway control outpost for Iran's Islamic Revolutionary Guard Corps (IRGC). A CENTCOM spokesperson said in a statement: "Earlier today, US forces struck two Iranian rocket launchers on Larak Island. We observed the IRGC preparing to launch rockets carrying mines intended for placement in the Strait of Hormuz."

In retaliation, Iranian forces launched a significant number of drones targeting locations within Gulf Cooperation Council member states Jordan and the United Arab Emirates. Iran also claimed to have seized a bulk carrier near Bandar Abbas in the Strait of Hormuz. Senior Iranian military officials reported that a large oil tanker struck a mine while attempting to traverse the waterway through an unauthorized route. However, US Central Command issued a statement on Sunday indicating that mines within the shipping lane had been successfully cleared.

President Trump took to Truth Social on Monday morning, asserting: "Iran has completely failed as a nation. The country has collapsed! Iran has no navy, no air force, its currency is in total freefall, soldiers and police aren't receiving pay; inflation is at 300%, and the leadership is in complete disarray, wholly unrepresentative of its people." This exchange underscores the persistent economic strain the six-month-long conflict continues to impose on the global economy.

Goldman Sachs research indicates that while Persian Gulf crude flows have recovered to roughly two-thirds of pre-war levels, approximately 15 million barrels per day, refined products such as gasoline and diesel remain in tight supply. The combination of Iranian strikes on Middle Eastern refining infrastructure and Ukrainian military attacks on Russian refineries, a significant global source of processing capacity, has pushed up energy costs for businesses and consumers across the United States and worldwide. Goldman Sachs commodity strategists wrote in their latest client note: "Consecutive attacks on refining facilities in the Middle East and Russia have further strained already tight global capacity, driving product margins to record highs and forcing plants to run at maximum utilization." The bank's strategists project a global decline in refined product throughput of approximately 7 million barrels per day.

Anwar Gargash, a senior diplomatic adviser to the UAE, posted on social media on Monday: "This state of neither war nor peace cannot persist indefinitely."

Markets will be closely watching the US Treasury this week. Treasury Secretary Scott Bessent has previously issued stern warnings about launching an "economic onslaught" against any country deemed to be trading with the current Iranian regime. Meanwhile, the White House is recalibrating its approach, shifting away from a hot war strategy and toward leveraging economic pressure to force Iranian concessions. Goldman Sachs estimates that Persian Gulf oil exports have recovered to approximately two-thirds of pre-war levels.

Over the weekend, the US Treasury imposed sanctions, accusing an Egyptian bank of facilitating the transfer of approximately $1.8 billion in funds for Iran. Critics point out, however, that the effectiveness of sanctions against third-party nations hinges on whether Bessent is willing to target China. Chinese refineries still purchase roughly 90% of Iran's crude exports, representing a crucial financial lifeline for the regime. The conflict has persisted far longer than the White House initially projected, and the Trump administration is now approaching the November midterm elections with only two months remaining. AAA data from Monday shows that US gasoline prices have eased over the past month, yet the national retail average remains above $4 per gallon. Fuel affordability is poised to be a decisive factor in the midterm elections for both chambers of Congress, which will determine control of the legislature for the remainder of Trump's second term.