Detailed Solution:
The correct answer is “Basra”.
Basra is NOT part of the Sunni Triangle in Iraq.
The Sunni Triangle is a region in Iraq that includes the cities of Baghdad, Ramadi, and Tikrit, which are predominantly Sunni Muslim and have been centers of insurgency against the U.S.-led coalition forces in Iraq.
Basra, on the other hand, is located in the predominantly Shiite Muslim southern part of Iraq.