[Bob]

Few people recognize that the 1993 WTC bombing was a failed WMD attack (cyanide).

I'm going on old recollections here so I may not have this exactly right but, as I recall it, the cyanide was just one aspect of the 1993 attack.

IIRC, the intent of blowing the bomb in the underground parking area was to cause a structural failure that would topple that tower into the other one. Doing that would have taken out both towers almost instantly, allowing almost no possibility of evacuation. Had that attack succeeded, the casualty count would have dwarfed 9/11.

[silverleaf]

ACCORDING TO THE presiding judge in last year's trial, the bombing of New York's World Trade Center on February 26, 1993 was meant to topple the city's tallest tower onto its twin, amid a cloud of cyanide gas. Had the attack gone as planned, tens of thousands of Americans would have died. Instead, as we know, one tower did not fall on the other, and, rather than vaporizing, the cyanide gas burnt up in the heat of the explosion. "Only" six people died.

The National Interest, Winter 1995/6
http://www.fas.org/irp/world/iraq/956-tni.htm