IDF

The conquest of southern Lebanon in Operation Peace for Galilee, and Israel’s long sojourn in the area, had political and military justification. But defects in the IDF’s deployment during the operation, and later in its protracted security activity, culminated in the May 2000 hurried withdrawal that continues to this day to negatively affect Israel’s national security. 
Twenty years after Israel’s withdrawal from south Lebanon, it is worth considering basic questions about its experience over years of warfare in a campaign that did not aim for victory. Those questions include what was going on, what Israel was fighting for, and what ultimately impelled it to withdraw. Such considerations have immediate significance in terms of clarifying the tenets of Israel’s security concept.
With the May 2000 abandonment of the South Lebanon Army, Israel signaled to its regional allies that it is not a reliable mainstay. This influenced the lukewarm response of the Golan Heights Druze to the Israeli offer of citizenship, as well as Israeli decision-making during the Syrian civil war regarding cooperation with Syrian militias in the villages near the Golan border. 
Israel’s May 2000 rushed evacuation of its security zone in south Lebanon and the desertion of its longstanding local allies there tarnished the Jewish State’s deterrent posture and helped spark a string of large-scale armed confrontations with Hezbollah (2006), the PLO (the so-called “al-Aqsa Intifada”), and Hamas (2008/9, 2012, 2014). The withdrawal transformed south Lebanon into an ineradicable terror entity that can harass northern Israel at will and expedited Hezbollah’s evolvement into a formidable military power armed with 150,000 rockets and missiles capable of reaching anywhere in Israel. It also dented the IDF’s fighting ethos and operational competence, as illustrated by its lukewarm performance during the Second Lebanon War (2006) and Operation Protective Edge (2014).
After a year of planning, including a thorough and at times painful ”self MRI scan,” the IDF has set itself the target of creating a networked force that can destroy enemy capabilities in as little time and at as low a cost as possible. According to its new multi-year Momentum program, the IDF has changed its definition of victory, marking a significant and potentially extremely fruitful shift in military thinking.
Combat in well defended built-up areas and in underground fortified facilities requires a large-scale order of battle quantitatively greater than anything known in the past. Meeting this challenge depends on the right integration of an elite, top-quality strike force with a large-scale quantitative mass at a medium level of quality. And while the IDF has been renewing and strengthening itself in those regards, when it comes to ground combat, where a quantitative mass is critical, a worrisome gap is widening.
Ever since the 2006 war, Israel has preferred to contain Hezbollah rather than fight it directly. So determined was Israel to avoid going to war with the terrorist group that it tolerated its significant military buildup. Since 2012, however, the IAF has carried out hundreds of sorties inside Syria aimed at stopping the delivery of advanced weapons to Hezbollah. Israel can continue to delay the arming of Hezbollah, but it has already become quite strong, and a war could occur even if neither side wants it.

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