The Dow fell 430 points -- 1.7% -- on fears about a political crisis in Italy and renewed trade tensions between the United States and China. The S&P 500 and the Nasdaq slipped 1.4% and 0.9% apiece.

The Dow fell 430 points -- 1.7% -- on fears about a political crisis in Italy and renewed trade tensions between the United States and China. The S&P 500 and the Nasdaq slipped 1.4% and 0.9% apiece.