and it's an ongoing issue of security for Israel which is understandable given the recent threats from Iran. However, this is parallel to the Israeli-Palestinian conflict and emphasis by the Quartet to return to the negotiation table. Whether the territorial dispute exists or didn't exist with regards to the Palestinians and Syria, the security defense system might have arisen in any case.
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from the article: U.S. official: More U.S. aid will help Israel make 'tough' decisions