New evidence has come to light of a possible link between Saudi Arabian officials and the 9/11 terrorist attacks, further raising tensions as President Obama travels to the kingdom.
Ghassan Al-Sharbi, a Saudi who became an al-Qaeda bomb maker, is believed to have taken flying lessons with some of the 9/11 hijackers in Arizona but did not take part in the attacks on New York and the Pentagon that killed 3,000 people in 2001.
He was captured in Pakistan in 2002 and has since been held at Guantanamo Bay. According to a US memo — known as document 17 — written in 2003 and quietly declassified last year, the FBI learnt that he had buried a cache of papers shortly before he was captured.
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