This is a difficult moral question, but I firmly believe that we must not reinstate the death penalty, murder can never be right and we need to consider that these ghastly people considered themselves to be part of their state, of ISIS, and as such they were carrying out capital punishment. We must not bring ourselves down to their level. However, I do believe that life should mean life in their case, time to perhaps reflect on what they have lost; no future, no chance to see children grow up, and likely no help from their masters in ISIS who will cast them aside as useless having done what they were instructed. The death penalty is not a deterrent and never has been, as someone said previously, those who plan it never think they will get caught and those with the red mist in front of their eyes do not think clearly. However, having said this, I do feel that having cast aside all civilised behaviour and acting as atrociously and deliberately cruelly as they did, these two are in no position, morally, to turn to the state they rejected to ask for protection in law. This is a difficult legal precedent and has been rushed through, I do hope they are not sentenced to death ( but suspect this will be the case in Trump's America), but that they are sentenced to permanent, non parole life.