Jihadi John beheaded or participated in the beheadings of American journalists James Foley and Steven Sotloff, as well as British humanitarian aid workers David Haines and Alan Henning, American aid worker Peter Kassig, Japanese private military contractor Haruna Yukawa, Japanese journalist Kenji Goto, and 22 members of the Syrian armed forces in a period from August 2014 to January 2015.[9][17]