
U.S. stocks closed down over concerns on global economy and Mideast tension.
Dow Jones lost 185.23 points, the lowest in 5 months.
S&P 500 fell 19.04 points, or 1.39 per cent at 1,355.49.
Nasdaq composite lost 37.08 points, or 1.29 per cent, to end at 2,846.81.
All key S&P sectors closed in negative territory, led by industrials and banks.