Wall Street slides over 1% as Ukraine tensions mount; Dow falls 400 points

S&P 500 was down 55.33 points, or 1.24%, at 4,419.68, and the Nasdaq Composite was down 177.35 points, or 1.26%, at 13,946.75

US stocks slumped over 1% on Thursday as escalating tensions between the West and Russia surrounding Ukraine unnerved investors, with some disappointing earnings adding to the gloom.

All the major S&P sectors were lower in morning trade, with financial and technology stocks falling the most with losses of nearly 2%.

Russia expelled deputy US ambassador Bartle