Mounting tensions with Syria sent the stock market sharply lower and pushed the price of crude oil to an 18-month high.

The Dow Jones industrial average lost 170 points, or 1.1 percent, to 14,776, the lowest close in two months.

The Standard & Poor’s 500 index fell 26 points, or 1.6 percent, to 1,630.

The Nasdaq composite fell 79 points, or 2.2 percent, to 3,578.

Crude oil jumped $3.09, or 2.9 percent, to $109.01 a barrel, the highest since February 2012.