Special to WorldTribune.com

By Backgrounder, Geostrategy-Direct.com

Islamic State of Iraq and Levant (ISIL) has developed a multi-pronged approach that has enabled the terror organization to survive Russian and U.S.-led coalition air strikes.

Experts say ISIL uses air raid sirens, tunnels, Internet security checks to weed out spies and has moved most of its control posts to civilian areas recognizing that the U.S. will not attack targets that may result in civilian casualties.

In the group’s de facto Syrian capital of Raqqa, sirens wail whenever a warplane approaches and terrorists immediately leave their posts, some even leaving their vehicles in the middle of roads.

“The sirens are on the roofs of high buildings, in the squares and in the streets,” Taym Ramadan, an activist told reporters. ISIL also “has resorted to tunnels — some previously used and others now being dug out inside the city,” Ramadan said.

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  Backgrounder, Geostrategy-Direct..com, How ISIL survives: Air strike sirens, Internet security checks, tunnels, WorldTribune.com