Subscribe to our channel http://bit.ly/AJSubscribe<br />In Britain, the government has been accused of drastically underestimating the numbers of British fighters heading to Iraq and Syria to join ISIL. <br /><br />But increasingly, foreign fighters are also being found among the ranks of those fighting against the group.<br /><br />Al Jazeera's Harry Smith reports.<br />Follow us on Twitter https://twitter.com/AJEnglish<br />Find us on Facebook https://www.facebook.com/aljazeera<br />Check our website http://www.aljazeera.com/
