ISIS poised to exploit historic US Iraq exit, terror group ‘actively waiting in the gaps,’ expert warns

ISIS fighters in Syria may have grown from 2,000 to 10,000 as the U.S. prepares to complete its Iraq withdrawal by Sept. 30, an expert warns.ISIS fighters in Syria may have grown from 2,000 to 10,000 as the U.S. prepares to complete its Iraq withdrawal by Sept. 30, an expert warns.Read Moree884d3f9-d0b6-54bd-8fd7-7a97a7008fc3, fox-news/world/world-regions/iraq, fox-news/politics/executive/national-security, fox-news/world/terrorism, fox-news/world/terrorism/isis, fox-news/world, fnc, fox-news/world, article, Fox News, Emma BusseyFOX News : World