The Tunnel Demolition Was An Admission
The Israel Defense Forces used more than 1,100 tons of explosives on September 10 to destroy Hezbollah’s tunnel network beneath the Ali Taher Ridge in southern Lebanon. The blast registered as a 4.1-magnitude earthquake on US Geological Survey instruments. Defense Minister Israel Katz released footage of the fireball. The tonnage will carry the headlines, and it should, because it is a genuinely large number for a single demolition. But the tonnage is not the story that matters for anyone trying to understand where the Lebanon ceasefire actually stands, nearly a year after it was signed.
The story is what an operation of that scale reveals about who is enforcing the ceasefire’s central term, and how.
The agreement that ended the 2024 war between Israel and Hezbollah rests on one load-bearing premise: that Hezbollah’s military infrastructure south of the Litani River gets dismantled and does not get rebuilt. The Lebanese Armed Forces were supposed to extend state authority into the south and prevent exactly the kind of underground reconstruction the IDF says it found beneath Ali Taher. UNIFIL was supposed to monitor and report violations. Neither has functioned as the text assumed. The Lebanese Armed Forces lack the manpower, the political mandate, and arguably the will to move against Hezbollah positions in a country where Hezbollah still commands a parliamentary bloc and a constituency that treats disarmament as capitulation, not compliance. UNIFIL has a monitoring mandate, not an enforcement one, and mandates without enforcement teeth produce reports, not results.
What fills that gap is Israel, acting alone, on its own intelligence, its own timeline, and its own assessment of what counts as a violation serious enough to warrant 1,100 tons of ordnance. That is worth naming plainly. A ceasefire whose central term is being enforced by one of the two belligerents, against the other, because the mechanisms written into the agreement to do that job are not doing it, is not functioning as a ceasefire in the sense the word usually carries. It is functioning as a unilateral Israeli veto over Hezbollah’s military reconstitution, exercised whenever Israeli intelligence identifies a target and Israeli decision-makers judge the political cost acceptable. The agreement provides the vocabulary, but Israeli enforcement provides the substance.
This is not a criticism of the operation itself, and it should not be read as one. Given the alternative, which is a Hezbollah tunnel network rebuilding undetected and unaddressed twelve kilometers from Israeli communities that were evacuated for over a year during the war, unilateral enforcement is the rational response to a monitoring architecture that does not monitor and an enforcement architecture that does not enforce. Israel is not violating the ceasefire by doing this. Israel is doing what the ceasefire assumed someone else would do, and the fact that someone else has not done it is the actual news.
It matters for a reason beyond Lebanon, too. Every account of the ceasefire’s durability that treats the Lebanese state and UNIFIL as functioning parts of the architecture is describing a document, not a situation. The situation is that Israel has assumed the compliance function for an agreement it did not design to require that of itself indefinitely, and it has done so without a clear public statement of how long it intends to keep doing it, what triggers the next operation, or what would need to change in Beirut for the actual treaty architecture to start doing its own job. Katz’s statement described what happened. It did not answer whether Israel expects the Lebanese Armed Forces to ever be capable of this mission, or whether Jerusalem has quietly concluded that they will not be, and has planned accordingly.
That is the question worth asking after the tremor fades from the seismographs. Not whether Hezbollah’s tunnels are gone. They may or may not be, and there will be others. The question is who Israel believes is actually responsible for keeping them gone, a year from now, and what happens when the answer, as it has been for the past year, remains no one but Israel itself.
