It takes a nation to protect the nation
http://www.amazon.co.uk/The-West-Islam-Islamism-Ideological/dp/1903... pp.97-99 (Baroness Cox is one of the authors - http://en.wikipedia.org/wiki/Caroline_Cox,_Baroness_Cox)
The last two books make it clear that taqiyya is used by Shia and Sunni alike.
The Al Qaeda Reader contains sections on Sunnis adopting taqiyya too.
See also: "Islam's Doctrines of Deception" http://4freedoms.com/group/theology/forum/topics/islam-s-doctrines-...
While many Muslim spokesmen today maintain that taqiyya is solely a Shi’ite doctrine, shunned by Sunnis, the great Islamic scholar Ignaz Goldziher points out that while it was formulated by Shi’ites, “it is accepted as legitimate by other Muslims as well, on the authority of Qur’an 3:28.” The Sunnis of Al-Qaeda, among others, practice it today.