"A classified report prepared by two independent Pentagon experts has concluded that the destruction of the federal building in Oklahoma City last April was caused by five separate bombs. The two experts reached the same conclusion for the same technical reasons.
Sources close to the Pentagon study say Timothy McVeigh did play a role in the bombing but peripherally, as a "useful idiot." The multiple bombings have a Middle Eastern "signature," pointing to either Iraqi or Syrian involvement."
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The quote is from an article in the 3-20-1996 Strategic Investment Newsletter. At the time, William Colby, former CIA Director, was an editor for the publication. I believe his status as editor contributes to the credibility of the article.
Maybe the Pentagon Report had it right back in 1996. Not much else was said about the report after Colby died in a canoe accident four weeks after the above article appeared in his newsletter.