Homeland Security

World Trade Center and Pentagon Attacks

Key Figures in Planning

High Level al-Qaeda

By early 1999, al Qaeda was already a potent adversary of the United States. Bin Ladin and his chief of operations, Abu Hafs al Masri, also known as Mohammed Atef, occupied undisputed leadership positions atop al Qaeda's organizational structure. Within this structure, al Qaeda's worldwide terrorist operations relied heavily on the ideas and work of enterprising and strong-willed field commanders who enjoyed considerable autonomy. To understand how the organization actually worked and to introduce the origins of the 9/11 plot, we briefly examine three of these subordinate commanders: Khalid Sheikh Mohammed (KSM), Riduan Isamuddin (better known as Hambali), and Abd al Rahim al Nashiri. We will devote the most attention to Khalid Sheikh Mohammed, the chief manager of the "planes operation."

Khalid Sheikh Mohammed
No one exemplifies the model of the terrorist entrepreneur more clearly than Khalid Sheikh Mohammed, the principal architect of the 9/11 attacks. KSM followed a rather tortuous path to his eventual membership in al Qaeda.1 Highly educated and equally comfortable in a government office or a terrorist safehouse, KSM applied his imagination, technical aptitude, and managerial skills to hatching and planning an extraordinary array of terrorist schemes. These ideas included conventional car bombing, political assassination, aircraft bombing, hijacking, reservoir poisoning, and, ultimately, the use of aircraft as missiles guided by suicide operatives.

In late 1998 to early 1999, planning for the 9/11 operation began in earnest. Yet while the 9/11 project occupied the bulk of KSM's attention, he continued to consider other possibilities for terrorist attacks. For example, he sent al Qaeda operative Issa al Britani to Kuala Lumpur, Malaysia, to learn about the jihad in Southeast Asia from Hambali. Thereafter, KSM claims, at Bin Ladin's direction in early 2001, he sent Britani to the United States to case potential economic and "Jewish" targets in New York City. Furthermore, during the summer of 2001, KSM approached Bin Ladin with the idea of recruiting a Saudi Arabian air force pilot to commandeer a Saudi fighter jet and attack the Israeli city of Eilat. Bin Ladin reportedly liked this proposal, but he instructed KSM to concentrate on the 9/11 operation first. Similarly, KSM's proposals to Atef around this same time for attacks in Thailand, Singapore, Indonesia, and the Maldives were never executed, although Hambali's Jemaah Islamiah operatives did some casing of possible targets.

KSM appears to have been popular among the al Qaeda rank and file. He was reportedly regarded as an effective leader, especially after the 9/11 attacks. Co-workers describe him as an intelligent, efficient, and even-tempered manager who approached his projects with a single-minded dedication that he expected his colleagues to share. Al Qaeda associate Abu Zubaydah has expressed more qualified admiration for KSM's innate creativity, emphasizing instead his ability to incorporate the improvements suggested by others. Nashiri has been similarly measured, observing that although KSM floated many general ideas for attacks, he rarely conceived a specific operation him-self. Perhaps these estimates reflect a touch of jealousy; in any case, KSM was plainly a capable coordinator, having had years to hone his skills and build relationships.

Hambali (Riduan Isamuddin)
Al Qaeda's success in fostering terrorism in Southeast Asia stems largely from its close relationship with Jemaah Islamiah (JI). In that relationship, Hambali became the key coordinator.

In addition to staging actual terrorist attacks in partnership with al Qaeda, Hambali and JI assisted al Qaeda operatives passing through Kuala Lumpur. One important occasion was in December 1999-January 2000. Hambali accommodated KSM's requests to help several veterans whom KSM had just finished training in Karachi. They included Tawfiq bin Attash, also known as Khallad, who later would help bomb the USS Cole, and future 9/11 hijackers Nawaf al Hazmi and Khalid al Mihdhar. Hambali arranged lodging for them and helped them purchase airline tickets for their onward travel. Later that year, Hambali and his crew would provide accommodations and other assistance (including information on flight schools and help in acquiring ammonium nitrate) for Zacarias Moussaoui, an al Qaeda operative sent to Malaysia by Atef and KSM.

Hambali used Bin Ladin's Afghan facilities as a training ground for JI recruits. Though he had a close relationship with Atef and KSM, he maintained JI's institutional independence from al Qaeda. Hambali insists that he did not discuss operations with Bin Ladin or swear allegiance to him, having already given such a pledge of loyalty to Bashir, Sungkar's successor as JI leader. Thus, like any powerful bureaucrat defending his domain, Hambali objected when al Qaeda leadership tried to assign JI members to terrorist projects without notifying him.

Abd al Rahim al Nashiri
Nashiri reported directly to Bin Ladin, the only other person who, according to Nashiri, knew all the details of the operation. When Nashiri had difficulty finding U.S. naval vessels to attack along the western coast of Yemen, Bin Ladin reportedly instructed him to case the Port of Aden, on the southern coast, instead. The eventual result was an attempted attack on the USS The Sullivans in January 2000 and the successful attack, in October 2000, on the USS Cole.

Nashiri's success brought him instant status within al Qaeda. He later was recognized as the chief of al Qaeda operations in and around the Arabian Peninsula. While Nashiri continued to consult Bin Ladin on the planning of subsequent terrorist projects, he retained discretion in selecting operatives and devising attacks. In the two years between the Cole bombing and Nashiri's capture, he would supervise several more proposed operations for al Qaeda. The October 6, 2002, bombing of the French tanker Limburg in the Gulf of Aden also was Nashiri's handiwork. Although Bin Ladin urged Nashiri to continue plotting strikes against U.S. interests in the Persian Gulf, Nashiri maintains that he actually delayed one of these projects because of security concerns. Those concerns, it seems, were well placed, as Nashiri's November 2002 capture in the United Arab Emirates finally ended his career as a terrorist.

Hamburg Contigent

Although Bin Ladin, Atef, and KSM initially contemplated using established al Qaeda members to execute the planes operation, the late 1999 arrival in Kandahar of four aspiring jihadists from Germany suddenly presented a more attractive alternative. The Hamburg group shared the anti-U.S. fervor of the other candidates for the operation, but added the enormous advantages of fluency in English and familiarity with life in the West, based on years that each member of the group had spent living in Germany. Not surprisingly, Mohamed Atta, Ramzi Binalshibh, Marwan al Shehhi, and Ziad Jarrah would all become key players in the 9/11 conspiracy.

Mohamed Atta
Mohamed Atta was born on September 1, 1968, in Kafr el Sheikh, Egypt, to a middle-class family headed by his father, an attorney. After graduating from Cairo University with a degree in architectural engineering in 1990, Atta worked as an urban planner in Cairo for a couple of years. In the fall of 1991, he asked a German family he had met in Cairo to help him continue his education in Germany. They suggested he come to Hamburg and invited him to live with them there, at least initially. After completing a course in German, Atta traveled to Germany for the first time in July 1992. He resided briefly in Stuttgart and then, in the fall of 1992, moved to Hamburg to live with his host family. After enrolling at the University of Hamburg, he promptly transferred into the city engineering and planning course at the Technical University of Hamburg-Harburg, where he would remain registered as a student until the fall of 1999. He appears to have applied himself fairly seriously to his studies (at least in comparisonn to his jihadist friends) and actually received his degree shortly before traveling to Afghanistan. In school, Atta came across as very intelligent and reasonably pleasant, with an excellent command of the German language.

When Atta arrived in Germany, he appeared religious, but not fanatically so. This would change, especially as his tendency to assert leadership became increasingly pronounced. According to Binalshibh, as early as 1995 Atta sought to organize a Muslim student association in Hamburg. In the fall of 1997, he joined a working group at the Quds mosque in Hamburg, a group designed to bridge the gap between Muslims and Christians. Atta proved a poor bridge, however, because of his abrasive and increasingly dogmatic personality. But among those who shared his beliefs, Atta stood out as a decisionmaker. Atta's friends during this period remember him as charismatic, intelligent, and persuasive, albeit intolerant of dissent.

In his interactions with other students, Atta voiced virulently anti-Semitic and anti-American opinions, ranging from condemnations of what he described as a global Jewish movement centered in New York City that supposedly controlled the financial world and the media, to polemics against governments of the Arab world. To him, Saddam Hussein was an American stooge set up to give Washington an excuse to intervene in the Middle East. Within his circle, Atta advocated violent jihad. He reportedly asked one individual close to the group if he was "ready to fight for [his] belief" and dismissed him as too weak for jihad when the person declined. On a visit home to Egypt in 1998, Atta met one of his college friends. According to this friend, Atta had changed a great deal, had grown a beard, and had "obviously adopted fundamentalism" by that time.

Ramzi Binalshibh
Ramzi Binalshibh was born on May 1,1972, in Ghayl Bawazir, Yemen. There does not seem to be anything remarkable about his family or early background. A friend who knew Binalshibh in Yemen remembers him as "religious, but not too religious." From 1987 to 1995, Binalshibh worked as a clerk for the International Bank of Yemen. He first attempted to leave Yemen in 1995, when he applied for a U.S. visa. After his application was rejected, he went to Germany and applied for asylum under the name Ramzi Omar, claiming to be a Sudanese citizen seeking asylum. While his asylum petition was pending, Binalshibh lived in Hamburg and associated with individuals from several mosques there. In 1997, after his asylum application was denied, Binalshibh went home to Yemen but returned to Germany shortly thereafter under his true name, this time registering as a student in Hamburg. Binalshibh continually had academic problems, failing tests and cutting classes; he was expelled from one school in September 1998.

According to Binalshibh, he and Atta first met at a mosque in Hamburg in 1995. The two men became close friends and became identified with their shared extremist outlook. Like Atta, by the late 1990s Binalshibh was decrying what he perceived to be a "Jewish world conspiracy." He proclaimed that the highest duty of every Muslim was to pursue jihad, and that the highest honor was to die during the jihad. Despite his rhetoric, however, Binalshibh presented a more amiable figure than the austere Atta, and was known within the community as being sociable, extroverted, polite, and adventuresome.

In 1998, Binalshibh and Atta began sharing an apartment in the Harburg section of Hamburg, together with a young student from the United Arab Emirates named Marwan al Shehhi.

Marwan al Shehhi
Marwan al Shehhi was born on May 9, 1978, in Ras al Khaimah, the United Arab Emirates. His father, who died in 1997, was a prayer leader at the local mosque. After graduating from high school in 1995, Shehhi joined the Emirati military and received half a year of basic training before gaining admission to a military scholarship program that would fund his continued study in Germany.

Shehhi first entered Germany in April 1996.After sharing an apartment in Bonn for two months with three other scholarship students, Shehhi moved in with a German family, with whom he resided for several months before moving into his own apartment. During this period, he came across as very religious, praying five times a day. Friends also remember him as convivial and "a regular guy," wearing Western clothes and occasionally renting cars for trips to Berlin, France, and the Netherlands.

As a student, Shehhi was less than a success. Upon completing a course in German, he enrolled at the University of Bonn in a program for technical, mathematical, and scientific studies. In June 1997, he requested a leave from his studies, citing the need to attend to unspecified "problems" in his home country. Although the university denied his request, Shehhi left anyway, and consequently was compelled to repeat the first semester of his studies. In addition to having academic difficulties at this time, Shehhi appeared to become more extreme in the practice of his faith; for example, he specifically avoided restaurants that cooked with or served alcohol. In late 1997, he applied for permission to complete his course work in Hamburg, a request apparently motivated by his desire to join Atta and Binalshibh. Just how and when the three of them first met remains unclear, although they seemed to know each other already when Shehhi relocated to Hamburg in early 1998.Atta and Binalshibh moved into his apartment in April.

The transfer to Hamburg did not help Shehhi's academic progress; he was directed by the scholarship program administrators at the Emirati embassy to repeat his second semester starting in August 1998, but back in Bonn. Shehhi initially flouted this directive, however, and did not reenroll at the University of Bonn until the following January, barely passing his course there. By the end of July 1999, he had returned to Hamburg, applying to study shipbuilding at the Technical University and, more significantly, residing once again with Atta and Binalshibh, in an apartment at 54 Marienstrasse.

After Shehhi moved in with Atta and Binalshibh, his evolution toward Islamic fundamentalism became more pronounced. A fellow Emirati student who came to Hamburg to visit Shehhi noticed he no longer lived as comfortably as before. Shehhi now occupied an old apartment with a roommate, had no television, and wore inexpensive clothes. When asked why he was living so frugally, Shehhi responded that he was living the way the Prophet had lived. Similarly, when someone asked why he and Atta never laughed, Shehhi retorted, "How can you laugh when people are dying in Palestine?"

Ziad Jarrah
Born on May 11, 1975, in Mazraa, Lebanon, Ziad Jarrah came from an affluent family and attended private, Christian schools. Like Atta, Binalshibh, and Shehhi, Jarrah aspired to pursue higher education in Germany. In April 1996, he and a cousin enrolled at a junior college in Greifswald, in northeastern Ger-many. There Jarrah met and became intimate with Aysel Senguen, the daughter of Turkish immigrants, who was preparing to study dentistry.

Even with the benefit of hindsight, Jarrah hardly seems a likely candidate for becoming an Islamic extremist. Far from displaying radical beliefs when he first moved to Germany, he arrived with a reputation for knowing where to find the best discos and beaches in Beirut, and in Greifswald was known to enjoy student parties and drinking beer. Although he continued to share an apartment in Greifswald with his cousin, Jarrah was mostly at Senguen's apartment. Witnesses interviewed by German authorities after 9/11, however, recall that Jarrah started showing signs of radicalization as early as the end of 1996. After returning from a trip home to Lebanon, Jarrah started living more strictly according to the Koran. He read brochures in Arabic about jihad, held forth to friends on the subject of holy war, and professed disaffection with his previous life and a desire not to leave the world "in a natural way."

In September 1997, Jarrah abruptly switched his intended course of study from dentistry to aircraft engineering-at the Technical University of Hamburg-Harburg. His motivation for this decision remains unclear. The rationale he expressed to Senguen-that he had been interested in aviation since playing with toy airplanes as a child-rings somewhat hollow. In any event, Jarrah appears already to have had Hamburg contacts by this time, some of whom may have played a role in steering him toward Islamic extremism.

Following his move to Hamburg that fall, he began visiting Senguen in Greifswald on weekends, until she moved to the German city of Bochum one year later to enroll in dental school. Around the same time, he began speaking increasingly about religion, and his visits to Senguen became less and less frequent. He began criticizing her for not being religious enough and for dressing too provocatively. He grew a full beard and started praying regularly. He refused to introduce her to his Hamburg friends because, he told her, they were religious Muslims and her refusal to become more observant embarrassed him. At some point in 1999, Jarrah told Senguen that he was planning to wage a jihad because there was no greater honor than to die for Allah. Although Jarrah's transformation generated numerous quarrels, their breakups invariably were followed by reconciliation.