In a sign of regional concern over terrorism, Saudi Arabia is pushing ahead with plans to build a fence along its entire 560-mile (900-kilometer) border with Iraq to prevent terrorists from entering the kingdom from the chaotic north.
The barrier, which likely will take five to six years to complete, is part of a $12 billion package of measures, including electronic sensors, bases and physical barriers, to protect the oil-rich kingdom from external threats, said Nawaf Obaid, head of the Saudi National Security Assessment Project, an independent research institute that provides security advice to the Saudi government.
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