Excerpt from: The National Interest, Winter, 1995/96
THE WORLD TRADE CENTER BOMB: Who is Ramzi Yousef? And Why It Matters by Laurie Mylroie
"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."
"Few Americans are aware of the true scale of the destructive ambition behind that bomb, this despite the fact that two years later, the key figure responsible for building it--a man who had entered the United Stares on an Iraqi passport under the name of Ramzi Yousef--was involved in another stupendous bombing conspiracy. In January 1995, Yousef and his associates plotted to blow up eleven U.S. commercial aircraft in one spectacular day of terrorist rage."
"The bombs were to be made of a liquid explosive designed to pass through airport metal detectors. But while mixing his chemical brew in a Manila apartment, Yousef started a fire. He was forced to flee, leaving behind a computer that contained the information that led to his arrest a month later in Pakistan. Among the items found in his possession was a letter threatening Filipino interests if a comrade held in custody were not released. It claimed the "ability to make and use chemicals and poisonous gas... for use against vital institutions and residential populations and the sources of drinking water." [1] Quickly extradited, he is now in U.S. custody awaiting trial this spring..."
http://www.fas.org/irp/world/iraq/956-tni.htm