Shay, Shaul. “The Islamic State (ISIS) and the Subterranean Warfare.” Institute for Policy and Strategy Publications, IDC Herzliya, December 2015.
URL: http://www.herzliyaconference.org/_Uploads/dbsAttachedFiles/ISISshay2015.pdf [PDF]
Since the IDF’s discovery and detonation of 32 terror tunnels dug by Hamas in Gaza beneath Israeli territory during the course of Operation Protective Edge (2014), the Israeli security agencies are concerned by the potential threat of tunnels across the border with Lebanon and Syria. The ISIS branch in Sinai ‘Vilayet Sinai’ (former Ansar Beit al Maqdis)and jihadi groups in Gaza strip can use tunnels to infiltrate into Israel or “tunnel bombs” against Israeli positions along the borders. Israel has to be ready to deal with sub terrain threats along all its borders and to find technological and operational solutions to the sub terrain strategic threats.
Bloch-Elkon, Yaeli, and Jonathan Rynhold. “Israeli Attitudes to the Obama Administration.” In US Foreign Policy and Global Standing in the 21st Century: Realities and Perceptions (ed. Efraim Inbar and Jonathan Rynhold; Abingdon and New York: Routledge, 2016): 248-66.
Overall, the polls show that Israelis strongly support the United States, while also being very critical of the Obama administration’s Middle East policies. More specifically, the findings are that Israelis overwhelmingly view the relationship with the United States as vital to Israeli security. Indeed, they rank it as more important than any factor other than Israel’s own military capabilities. They also clearly view the United States in general as a reliable ally of Israel. However, Israelis are evenly divided as to whether Obama’s approach to Israel is a positive one, and, even more significantly, a clear majority of Israelis view Obama’s policies in the Middle East in a negative light. This is true for the administration’s policies toward the Islamic State in Syria and Iraq (ISIS), the Iranian nuclear issue, and the Israeli-Palestinian process.