Stocks in the U.S. plummeted after the opening bell on Monday, as jittery investors reacted to the potential fallout from the war in Iran , including the impact on global oil supplies. The Dow Jones Industrial Average slid 1,110 points, or 2.2%, in early trading, while the S&P 500 and the tech-heavy Nasdaq Composite each dropped 1.9%. "Global financial markets are in disarray, anticipating a significant interruption in supplies of crude oil and natural gas because of President Trump's war