According to the FBI Director James Corney, the FBI disrupted several recruitment attempts by the IS in the United States over the summer. Corney revealed to the Senate Committee on Homeland Security and Governmental Affairs that they had information that most of IS suspects in the U.S used encrypted communication gadgets making it almost impossible to trace them. The director of the National Counterterrorism Centre said they suspected that over 300 U.S citizens had travelled to the Middle East and specifically Iraq and Syria where the IS has the greatest influence to fight alongside the Islamic militants.
Nick Rasmussen who is the director of the National Counterterrorism Centre further stated that the number of Americans who had travelled to join the IS fighters was relatively smaller compared to the number of westerners who had joined the militant group. It is estimated that there are approximately 5,000 western militants within the ranks of IS. There is a growing concern that the U.S and its allies cannot control the number of foreign fighters flowing to fight alongside the IS. Currently, the approximate figure of all foreign fighters fighting alongside the IS currently stands at 28,000. Further worrying is that the figure could have gone up in the recent past.
Most of the countries fighting IS are worried about the safety of their troops. Britain for example lost over 60 soldiers who were killed while fighting the IS. The IS currently targets the younger generation especially people under the age of 18 who are recruited through the social media. However, the messages are encrypted such that the security agencies cannot read the information passed to potential recruits making it even harder to control the runaway recruitment to the IS.