The Daesh “caliphate” that was once the size of Britain has been reduced to a tiny patch of land near a village in eastern Syria, the anti-Daesh coalition said on Thursday.

US-backed forces in Syria said Wednesday they were detaining foreign Daesh group fighters on a “daily basis,” days after confirming the capture of German militants Martin Lemke.

Any transfers of suspected foreign militants and their relatives out of Syria should be transparent, Human Rights Watch told AFP, as camps in the northeast fill with families of different nationalities.