Steven Christopher Costa is set to leave Iraq to fight against ISIS in Britain . Married father-of-two says he will take his own life if caught by terrorists . Mr Costa says his wife was 'not impressed ' when he revealed his plans . Former Royal Navy seaman 's biggest fear is not seeing his children again .
Steven Christopher Costa is set to leave Britain to fight against ISIS in Iraq . Married father-of-two says he will take his own life if caught by terrorists . Mr Costa says his wife was 'not impressed ' when he revealed his plans . Former Royal Navy seaman 's biggest fear is not seeing his children again .