April 2 (Reuters) - Wall Street's main indexes opened lower on Thursday, in the last session of a holiday-truncated week, after President Donald Trump signaled more aggressive attacks on Iran, dampening expectations for a swift end to the Middle East conflict.
The Dow Jones Industrial Average .DJI fell 96.4 points, or 0.21%, at the open to 46,469.36. The S&P 500 .SPX fell 62.7 points, or 0.95%, at the open to 6,512.61, while the Nasdaq Composite .IXIC dropped 368.4 points, or 1.69%, to 21,472.523 at the opening bell.