I think your comment is more ambiguous than you realise. Who is the "them" at the end of your sentence?
Some would argue that Hamas continues to exist because no one has prosecutes its members.
Some would argue that Hamas exists because no one prosecutes those in the Israeli government (the "them" of the parent comment) who persecute Palestinians in a way that is bound to cultivate terrorism.
Some would argue that Hamas continues to exist because no one has prosecutes its members.
Some would argue that Hamas exists because no one prosecutes those in the Israeli government (the "them" of the parent comment) who persecute Palestinians in a way that is bound to cultivate terrorism.