Wall Street edged lower on Monday trading session together with most risk assets world-wide after Russian intervened Ukraine raising concerns over possible war conflict as the President of Russian Federation Vladimir Putin claimed the intervention was correct. The S&P 500 Index dropped 0.83% to 1,843.93, the Dow Jones industrial average fell 0.98% to 16,161.55 and the Nasdaq Composite Index slipped 0.97% to 4,266.249.