I had to truncate the title due to character limitations. Full title is: <i>The Repatriation of Foreign Fighters and Their Families: Options, Obligations, Morality and Long-Term Thinking</i><p>Abstract:<p><i>As Islamic State (IS) loses control of its so-called Caliphate, the question on what to do with foreign fighters and their families has become more pertinent. The announcement of the US withdrawal from Syria in December, as well as Trump’s tweets mid-February that the US would release 800 fighters captured in Syria if its allies would not take them back, has led to even more urgency. In this Perspective we will discuss the issue of the (possible) repatriation of foreign fighters and their families, especially from Syria, addressing several options, and taking into account legal, moral and (long-term) security perspectives.</i>