The Associated Press reported that the price of oil leapt upward on Monday by more than 6%, which will most likely lead to higher gas prices.
The reason is due to the war with Iran possibly stopping the flow of crude oil, which could ignite inflation.
Prices for natural gas also rose after a major supplier of liquefied natural gas to Europe said it would stop production because of the war. Gold climbed 1.2%.
The S&P 500 also fell 1.2% at the start of trading, largely in part to cruise line and airline drops.
U.S. stocks helped ease those losses with small gains.
The Dow Jones Industrial Average was up 0.1%, with roughly an hour remaining in trading, and the Nasdaq Composite was 0.6% higher.
President Donald Trump said the war with Iran could last for weeks.
