Other than providing hosting for terrorists, how did the 93 WTC bombing involve the Iraqi government?
Other than providing hosting for the terrorists, what did Afghanistan have to do with 9/11?
Wikipedia's entry for the Planning and Organization of the 1993 World Trade Center bombing
Planning and organization
Ramzi Yousef, born in Kuwait, began in 1991 to plan a bombing attack within the United States. Yousef's uncle Khalid Shaikh Mohammed Ali Fadden, who later was considered "the principal architect of the 9/11 attacks," gave him advice and tips over the phone, and funded him with a US$660 wire transfer.[1]
Yousef entered the United States with a false Iraqi passport in 1992. Police found instructions on making a bomb in Yousef's partner's luggage. The name Abu Barra, an alias of Mohammed Jamal Khalifa, appeared in the manuals. Yousef's partner was arrested on the spot for his false passport and his bombmaking instructions. Immigration and Naturalization Service (INS) holding cells were overcrowded, and Yousef, claiming political asylum, was given a hearing date.
Yousef set up residence on Nicole Pickett Avenue in Jersey City, New Jersey, traveled around New York and New Jersey and called Sheikh Omar Abdel-Rahman, a controversial Muslim cleric, via cell phone. After being introduced to his co-conspirators by Abdel-Rahman at the latter's Al-Farooq Mosque in Brooklyn, Yousef began assembling the 1,500-lb urea nitrate-fuel oil device for delivery to WTC. He ordered chemicals from his hospital room when injured in a car crash - one of three accidents caused by Salameh in late 1992 and early in 1993.
El Sayyid Nosair, one of the Blind Sheikh's men who would later be convicted for the bombing, was arrested in 1991 for the murder of Rabbi Meir Kahane. According to prosecutors, "the Red" Mahmud Abouhalima, also convicted in the bombing, told Wadih el Hage to buy the .38 caliber revolver used by Nosair in the Kahane shooting. Nosair was acquitted of murder but convicted of gun charges. Dozens of Arabic bomb-making manuals and documents related to terrorist plots were found in Nosair's New Jersey apartment, with manuals from Army Special Warfare Center at Fort Bragg, North Carolina, secret memos linked to Joint Chiefs of Staff, and 1440 rounds of ammunition. (Lance 2004 26 )
I would also add that in 1998 Saddam Hussein offered sanctuary to Al Qaeda after the US attacked Afghan bases of Al Qaeda. Al Qaeda refused the offer but it demonstrates that assurances that the two never cooperated are absurd.