As part of a plan to protect its borders, Saudi Arabia has invited bids for the construction of a state-of-the-art security fence along the entire length of its 560-mile border with Iraq.
Saudi Arabia is concerned the chaos in neighbouring Iraq could cause an overspill of sectarian violence and terrorism.
The double-line fence will include 135 electronically controlled gates, fence-mounted ultraviolet intrusion detection sensors, buried radio detection sensors and razor wire.