It remains unclear what the future holds for the hundreds of westerners that have fought, or are fighting against, ISIS. For those that do come home, the consequences of their decision to travel, whether physical, mental or legal, could be life changing. In the legal context at least, it appears many were unaware of the potential implications. With more legal clarity, such a situation could have been avoided. The conflict in Syria and Iraq is not the first to feature large numbers of foreign fighters, but considering the outcomes so far, we should make it the last.