gaza palestinian islamist group hamas name new deputy chief thursday formerly turkey-based commander israel accuse orchestrate lethal triple kidnap help trigger 2014 gaza war saleh al-arouri promotion come hamas seek close rank u.s.-backed palestinian president mahmoud abbas decade-old schism entente israel say revive peace talk unless hamas recognize right exist disarm palestinian information center hamas-linked news site say arouri bear occupy west bank exile israel 2010 long stint prisons elect deputy group leader ismail haniyeh arouri hamas movement man site say twenty-three years detention expulsion weaken resolve leader saleh al-arouri 51. three israeli teens abduct kill west bank june 2014 arouri istanbul claim responsibility name hamas israel respond west bank security sweep along revenge kill palestinian youth jerusalem group israelis spiral 50-day war gaza strip hamas fiefdom gaza health officials say 2,100 palestinians kill conflict israel put number dead 67 soldier six civilians israel also press ankara islamist-rooted government crack arouri describe mastermind kidnappings hamas militant attack hamas source say arouri leave turkey late 2015 qatar late lebanon decline give current location hamas pick new deputy chief israel blame help spark gaza war