geneva international committee red cross say thursday access 1,300 foreign wive children suspect islamic state militants follow concern express safety families hold iraqi force near mosul neutral aid agency call side war iraq syria treat detainees line international law prohibit torture executions enshrine right fair trial 300 detain foreign families iraq come turkey many others former soviet state tajikistan azerbaijan russia accord preliminary figure iraqi army currently visit provide humanitarian assistance 1,300 women children several dozen nationalities detain iraq near mosul patrick hamilton icrc deputy director middle east north africa tell news brief last month foreign aid agencies iraq say gravely concern fate families women children iraqi custody since august 30 follow fall city tal afar large group foreigners link islamic state hold iraqi force since begin drive militants mosul areas northern iraq last year icrc denounce authorities militias iraq syria war islamic state vow annihiliate enemy decline name name dehumanisation enemy could lead unlawful torture executions hamilton warn talk annihilation extermination contribute perpetuate problem rather solve international humanitarian law protect civilians former combatants say icrc good level dialogue iraqi authorities visit detention facilities iraq hold 44,000 people far year hamilton say thousands foreigners fight islamic state iraq syria unknown number detain hamilton say icrc already talk potential repatriation foreign fighters ready play role neutral intermediary assist state carry return individual citizens say indeed dialogue number different state iraqi authorities relation recent weeks say hamilton ask media report executions u.s.-backed syrian democratic force sdf follow fall jihadist capital raqqa syria say icrc team chaotic northeastern city last week frankly first-hand information regard extrajudicial kill like ... clearly remain concern aftermath raqqa mosul hawija tal afar forth say red cross say access islamic state families hold near mosul