U.N. commission includes photos and videos of abuse , victims ' accounts . Panel says actions by ISIS amount to war crimes and crimes against humanity . Comment: `` At the core of ISIS ' propaganda strategy is an effective use of modern communications , particularly social media for purposes of recruitment and fundraising , '' it said . ISIS leaders should be held accountable by an international court , paper says .
U.N. commission includes photos and videos of abuse , victims ' accounts . Panel says actions by ISIS amount to war crimes and crimes against humanity . Comment: ISIS leaders should be held accountable by an international court , paper says .