The day the war in West Asia completed a month, Dalal Street witnessed one of its most brutal sell-offs since the conflict began on Feb 28. During Friday's session, with sensex-heavyweight Reliance Industries tanking 4.6%, the index closed 1,690 points or 2.3% lower at 73,583 points The crash in RIL's stock price that came on the back of imposition of windfall tax on petro-product exporters by govt, the rupee's slide to a record low level against the dollar, rising bond yields and strong foreign fund selling, all because of the war in West Asia, led to Friday's slide in stocks, market players said.