In 1998 Al-Qaeda declared war on the United States and on September 11, 2001 killed thousands on American soil. In 2004 Osama bin Laden admitted that he had come up with the idea for the September 11th attack.
The September 11th attacks were done in the name of Islam.
Is there a doctrinal basis for this in orthodox Islam?
Honor the victims of 9/11 and educate your self on the doctrine of Islam. Use this link to Islam 101
Authored by Gregory M. Davis, this short course — Islam 101 — is meant to help people become better educated about the fundamentals of Islam and to help the more knowledgeable better convey the facts to others.
To even begin to have a discussion about Islamic terrorism, we should have at least a basic understanding of Islam itself. Citizen Warrior