Why Hezbollah trusts in a 'Maginot Line' defense at Ali al-Taher ridge - analysis

Hezbollah lost another key stronghold in Lebanon recently. The Israel Defense Forces said on September 3 that they had cleared the Ali al-Taher ridge.

The 36th Division had “operated in recent weeks to clear and neutralize the two underground routes in the Ali al-Taher Ridge area in the Security Zone. The soldiers achieved operational control of the ridge area, both above and below ground, and cleared the area of terrorists. Some of the terrorists were eliminated, while others fled the area.”

The IDF said that the operation was ongoing. “Upon completion of the operation, the IDF will adjust its defensive posture in accordance with the situational assessment…Following operations in the underground routes over the past several weeks, their capability to carry out terror attacks against Israeli civilians and IDF soldiers from within the routes has been neutralized.”

The site was well known and large. It “contained command centers, weapons storage rooms, generator rooms, living quarters, showers, and a kitchen, which enabled the terrorists to manage combat and remain underground for extended periods of time. The infrastructure is a strategic underground network that was built over two decades and funded and planned by the Iranian terror regime.”

Fall of Ali al-Taher ridge gains international attention

The fall of this Hezbollah stronghold has been spotlighted around the world. France24 notes that “Israel has seized the strategically placed Ali al-Taher ridge in southern Lebanon from Hezbollah fighters, Defence Minister Israel Katz said Friday. The Iran-aligned Shiite group did not confirm losing the highland, which sits around 10 kilometers from the border with Israel and was pummelled by Israeli strikes in recent weeks despite a ceasefire.”

The report noted that “the Iran-aligned Shiite group did not immediately comment.” Israel’s Defense Minister Israel Katz noted that "the mission was completed and the tunnels were cleared of terrorists.” Reuters described the site as “the Ali al-Taher ridge in southern Lebanon, which is named after a Shi'ite Muslim scholar whose shrine sits at its summit, has become one of the most contested pieces of ground in the Israel-Hezbollah war. The cluster of hills is not especially large. But what it overlooks ‌in southern Lebanon – and what Hezbollah is suspected to have built beneath it – thrust it to the center of the fight between Israel and the Iran-backed militant group.”

What might we learn from all this? Hezbollah sought to turn this into a key facility over the last decades. Reports indicate they had Iranian support in doing so. In essence, Iran was constructing a kind of Hezbollah Maginot Line on Israel’s border. The problem that is well known with a static defense line is that it can be breached. When the original Maginot Line was built, it was full of hi-tech defense equipment that was meant to address the challenges faced in the First World War and modernize the trench system to turn it into some kind of futuristic battlefield of interconnected bunkers with deep facilities for soldiers to sleep in and live in. It was impenetrable. However, like the guns at Singapore or Aqaba in 1917, the weakness was in the rear.

The weakness of Ali al-Taher wasn’t in the rear; it was that Hezbollah can’t simply hide underground forever. Over enough time, the IDF was able to defeat them. It did take around 1,060 days if one counts from when Hezbollah began its attacks on October 8, following the Hamas attack the day before. The war with Hezbollah has seen a lot of limited fighting and slow movement, with some ceasefires and some escalation over the last years.

This isn’t a rapid war of maneuver. The IDF, for instance, captured the Crusader Beaufort fortress within a day or two in 1982, whereas it took until late May 2026 to take it this time. What changed? Israel no longer fights rapid wars of maneuver. The enemy doesn’t either. The enemy had to be ground down in Ali al-Taher, at a pace that was similar to the First World War. Nevertheless, the victory over Hezbollah shows that its investment in static fortifications underground won’t save it. What saves it is the depth of Lebanon.

Lebanon isn’t a very big country. Iran is around 150 times larger. However, for Israel, Lebanon is large because Israel is also a relatively small country. When it comes to fighting wars these days, in the West Bank or Lebanon or Gaza, it is measured in villages. It is not more than a few miles of ground that the IDF wants to control as part of Israel’s new buffer zone doctrine of controlling parts of Lebanon and Gaza. In the West Bank, the concept isn’t to take control, but to do raids.

In the end, the Hezbollah Maginot Line fell in southern Lebanon. It has taken many years to uproot the infrastructure that was built over the last decades. Whether this means a victory is unclear. Perhaps southern Lebanon becomes another Security Zone as in the 1980s. A buffer zone like what was called the Spanish March in the zone between Spain and France. Time will tell.