FBI could have stopped the 1993 World Trade Center bombing

Missing Info & perspectives of course : Emad A. Salem & his FBI handlers had plans to provide the WTC bomb makers with inert material, but new FBI head for the case stopped this plan:
..Meaning
FBI could have stopped the bombing from happening but higher-up (D.C) officials allowed the bombers to work with real explosive material and go ahead with the bombing! Why? Also the truck bomb did not get parked in the spot planned due to the driver panic when that spot was taken apparently after some one moved sawhorses placed to keep the spot next to a key column.
-
In Northern Ireland the Omagh bomb of 1998 was also allowed to "walk" because Irish Police, Mi5 and FBI wanted to protect their informants working undercover in Real IRA
http://en.wikipedia.org/wiki/Omagh_bombing

Observer reveals tape which shows that Irish police chose to protect its Real IRA informant
http://www.guardian.co.uk/uk/2....003/oct/19/northerni

"The Observer has also established that the Northern Ireland police team investigating Omagh not only believes Dixon and White's testimony but spent three days in July 2002 debriefing White at a secret location in the Scottish Highlands.
The southern detective told his PSNI colleagues then that one of his Garda superiors told him he had decided to let the bomb go ahead. The senior officer's reasoning was that Dixon had fallen under the terrorists' suspicion after several Real IRA plots, including a plan to leave a car bomb in London, had been thwarted. The senior Garda said Dixon's credibility had to be protected, White told the PSNI investigation team.

When White protested that people might get killed if there was no action on Dixon's intelligence that a bomb was being shipped across the border the same weekend as the Omagh atrocity, his superior reminded him that the Real IRA had failed to kill anyone in eight previous attacks that year. "
::::
British double-agent was in Real IRA's Omagh bomb team
http://findarticles.com/p/arti....cles/mi_qn4156/is_20
"SECURITY forces didn't intercept the Real IRA's Omagh bombing team because one of the terrorists was a British double-agent whose cover would have been blown as an informer if the operation was uncovered."
:::::

MI5 withheld intelligence ahead of Omagh
http://www.rte.ie/news/2006/0224/omagh.html
"The British security service, MI5, withheld vital anti-terrorism intelligence just months before the Omagh bombing in 1998, it has emerged.
According to security sources in Northern Ireland, MI5 failed to inform Special Branch of the threat about the bomb plot.
The details have only just emerged as part of an investigation into an FBI agent who infiltrated the Real IRA, which carried out the attack."

Tapes Depict Proposal to Thwart Bomb Used in Trade Center Blast
By RALPH BLUMENTHAL
Published: October 28, 1993
http://www.nytimes.com/1993/10..../28/nyregion/tapes-d
" Law-enforcement officials were told that terrorists were building a bomb that was eventually used to blow up the World Trade Center, and they planned to thwart the plotters by secretly substituting harmless powder for the explosives, an informer said after the blast.
The informer was to have helped the plotters build the bomb and supply the fake powder, but the plan was called off by an F.B.I. supervisor who had other ideas about how the informer, Emad A. Salem, should be used, the informer said.
The account, which is given in the transcript of hundreds of hours of tape recordings Mr. Salem secretly made of his talks with law-enforcement agents, portrays the authorities as in a far better position than previously known to foil the Feb. 26 bombing of New York City's tallest towers. The explosion left six people dead, more than 1,000 injured and damages in excess of half a billion dollars. Four men are now on trial in Manhattan Federal Court in that attack.
Mr. Salem, a 43-year-old former Egyptian army officer, was used by the Government to penetrate a circle of Muslim extremists now charged in two bombing cases: the World Trade Center attack and a foiled plot to destroy the United Nations, the Hudson River tunnels and other New York City landmarks. He is the crucial witness in the second bombing case, but his work for the Government was erratic, and for months before the trade center blast, he was feuding with the F.B.I. Supervisor 'Messed It Up'
Mr. Salem recounts a talk he had had earlier with an agent about an unnamed F.B.I. supervisor who, he said, "came and messed it up.""
(article continues)