But the poll found uncertainty about whether al Qaeda was responsible for the September 11 attacks on the United States in 2001. Some 20 percent believed the U.S. government was behind the attacks.

"On average less than one in four believes al Qaeda was responsible for September 11th attacks. Pakistanis are the most skeptical -- only 3 percent think al Qaeda did it," said WorldPublicOpinion.org.

"There is no consensus about who is responsible for the attacks on New York and Washington; the most common answer is 'don't know'."

Full article