The largest challenge has been the lack of cooperation these countries have shown: Israel has not addressed the substance of allegations, and the United States has insisted that the whole issue falls outside the mandate.
最大的挑战是这些国家缺乏合作态度：以色列没有处理这些指控的实质性问题，而美国坚持认为，整个问题不属于这项任务的范围。