ambassador to the united states. >> it was to get young americans in college to teach them about islam and osama bin laden way of thinking. >> those that graduated received degrees in islamic jurisprence they taught 75 members of the military. >> reporter: so they were being taught at a school funded by the saudis within eyesight of the capital? >> absolutely. >> reporter: and radical brand of islam is being tied to the school. four years later with the help of f.b.i. agents including brian and homeland security and irs. the institute was shut down. in april 2001, two of the 9/11 attackers attend his mosque. hosni who knows him was joined by another saudi national,