It was originally an attempt to curb the influx of illegal migrants from African countries – mostly from Sudan, Eritrea and Ethiopia — trekked across the desert toward Israel’s glimmering economic opportunities.
However, following increased insurgent movement across the southern border in 2011, it became the Israel’s primary weapons against the growing threat of jihadi terror. Egypt — struggling to maintain control over the Sinai desert and to keep crime, illegal migration and extremist Islam at bay — did not oppose the construction of the fence so long as it was built on Israeli soil.
The steel barrier project has been upgraded to include cameras, radar and motion detectors.
In January 2013, construction of the barrier was completed in its main section.The final section of the fence was completed in December 2013.
The 245 mile fence took three years to construct, at an estimated cost of NIS 1.6 Billion, making it one of the largest projects in Israel’s history
Does a border fence work? check out the dramatic change after Israel put one up by Sharona Schwartz – November, 11th 2013 – The Blaze.com
Sharon presses for fence across Sinai by Tim Butcher – December 7th 2005 – Daily Telegraph