The introduction of chemical weapons and the possibility of Western military intervention threaten to draw Israel directly into the conflict. The spillover effects of the Syrian crisis have also unsettled Lebanon, exemplified in the recent spate of sectarian violence, and threaten to destabilize Jordan, which is struggling under the burden of more than 500,000 Syrian refugees.
与此同时，叙利亚内战开始溢出至以色列的戈兰高地。化学武器的使用以及西方可能进行军事干预有可能让以色列直接卷入冲突。叙利亚危机的溢出效应还影响了黎巴嫩（近期宗派暴力频发就是明证）、威胁了约旦的稳定（50万叙利亚难民令约旦疲于应付）。