Executive Summary
Israel’s defense concept for Gaza failed on October 7 due to flawed intelligence, misplaced reliance on deterrence, underestimation of geographic and human factors, and failure to prevent Hamas’s buildup. To establish a defensible border, Israel must shift from relying on deterrence and intelligence warnings to maintaining permanent readiness, operational control, and depth. Full control over access routes, a demilitarized buffer zone, and a constant IDF presence are essential. Settling Israelis in Gaza should be avoided. Only continuous vigilance can secure the southern border.
If one lesson is clear from Hamas’s terrorist assault on October 7, 2023, it is that Israel’s security concept regarding the Gaza Strip failed completely. Although the investigation into that day’s events is still underway, several key failures have already emerged.
1. The Intelligence Failure
The first failure was conceptual.
- Intelligence assessments wrongly assumed that Hamas was deterred, incapable of a large-scale attack, and primarily focused on improving Gaza’s living conditions.
- Analysts believed they could accurately gauge Hamas’s intentions and capabilities.
This led to complacency and overconfidence, eroded professionalism, and resulted in an inadequate intelligence-collection plan. The defense establishment also assumed that the border fence system was sufficient to block infiltration attempts. That assumption was based on a small-scale threat scenario, not a broad, coordinated invasion targeting both civilians and military sites.
2. Overreliance on Deterrence
Too much confidence was placed in deterrence. The belief was that Hamas, due to Israel’s overwhelming superiority in force, technology, and intelligence, would avoid offensive actions. It was also assumed that Hamas understood its tunnels were neutralized and its rockets were ineffective against Israeli defenses.
In reality, Hamas was willing to pay a heavy price to achieve its goals. The group’s cost-benefit logic was misunderstood. Fanatical organizations are not deterred by conventional measures.
3. Underestimating the Geostrategic and Human Terrain
The defense posture underestimated the dangers posed by geography, population, ideology, and military conditions.
- The border’s proximity to hostile population centers created vulnerability.
- Intelligence penetration was difficult.
- Defensive depth was almost nonexistent.
- Standing forces were limited.
- Civilians and bases were positioned too close to the border without proper protection.
These weaknesses existed opposite a population indoctrinated from childhood to hate Israel and glorify violence.
4. Failure to Prevent Hamas’s Military Build-Up
Since the 2005 disengagement, Israel failed to prevent Hamas from building military strength. Beyond enforcing a blockade, little was done to stop the manufacture of weapons, smuggling, or training. The withdrawal caused a major loss of human intelligence, weakening Israel’s counterterrorism capabilities. During quiet periods, Israel rarely targeted Hamas leaders.
5. Building a Defensible Border
To make the Gaza border defensible, Israel must fundamentally revise its security concept. Defense should be based on potential threats, not enemy intentions. Deterrence alone cannot guarantee security.
High-quality intelligence is vital, but defense cannot rely on advanced warning. Israel must maintain constant readiness, ensuring security through uninterrupted preparedness, much as Iron Dome does.
6. Operational and Strategic Requirements
Israel must prevent Gaza’s rearmament by controlling all access routes, including the border with Egypt, tunnels, sea, and air approaches. An IDF presence along the Philadelphi Corridor is necessary until Egypt and technology can ensure complete arms interdiction.
Israel must also retain operational freedom across Gaza to prevent regrouping and rearmament. Firepower alone is insufficient; ground maneuvering must remain an option.
A forward demilitarized buffer zone inside Gaza could help detect infiltration. Agricultural land along the border should be fenced, and movement strictly controlled. In areas near the border, residents may need to relocate or face additional barriers.
Defense in depth requires strong border fortifications, rapid-response teams in nearby communities, and improved aerial and naval defense.
7. The Question of Renewed Settlement
Reestablishing Israeli settlements inside Gaza would currently do more harm than good. While settlements contribute to security in other regions, under the present circumstances, they would complicate defense and should be avoided.
Conclusion
Achieving a defensible Gaza border will require significant investment in manpower, technology, and intelligence. In a multi-front conflict, this burden is heavy but necessary.
Regardless of Hamas’s status or Gaza’s governance, only continuous readiness, operational control, and strategic depth can ensure a truly defensible border. This is especially true as long as the Palestinians don’t change their narrative of hatred towards Zionism and struggle against Israel until its demise.
