The United States launched a large-scale bombing campaign against Iran on the 21st of Eastern Time, and despite this, the market reacted with relative calm. On the following Monday, the price of international crude oil did not surge excessively, while President Trump expressed his concerns over oil prices and instructed the Energy Department to ramp up drilling.

Trump tweeted on Truth Social: “To the Department of Energy: Drill, baby, drill, and do it now!” He further stated in another message, “Everyone, keep those prices low, I’m watching! Raising prices plays into the enemy's hands, don’t do it!”

On Monday morning, West Texas Intermediate crude futures peaked at $78 a barrel but traded at $73.52 in early U.S. trading. The Brent crude price also briefly surpassed $80 a barrel but later settled at $76.87. Investors appeared nonchalant regarding potential Iranian retaliations and the risk of escalating Middle Eastern conflicts.

On Monday, the U.S. stock market initially dipped slightly but soon rebounded. The Dow Jones Industrial Average rose by 198 points or 0.46%. Reports from Iran indicated that the Iranian parliament had agreed to block the Strait of Hormuz as a retaliation, pending approval from the National Security Council. Analysts noted that the current market response indicated investors did not anticipate a long-term impact on oil prices from a blockade of the strait. A university expert remarked this calm market response would have been unimaginable a few years ago.