In the Context of frequent "threats" by PA President Abbas to join the ICC if Israel will not heed to his demands, some of you may find interest in the angle examined in my post at opinio juris, on the risks of such a step, not just for Hamas

http://opiniojuris.org/2014/09/05/guest-post-possible-responsibility-palestinian-authoritys-leadership-al-aqsah-martyrs-brigade-actions-gaza-conflict/#comment-65206