For Israelis living along the Lebanese border, the debate over Israel’s clearing of vegetation, buildings and terrain in southern Lebanon is not an abstract argument about military doctrine. It is about whether Hezbollah will once again be able to position armed fighters, anti-tank teams, observation posts, tunnels and infiltration forces within striking distance of Israeli homes.
Images of burned vegetation, bulldozed land and demolished structures in southern Lebanon are frequently presented as evidence of an indiscriminate Israeli “scorched-earth” campaign. That framing, however, leaves out the military reality Israel says it is confronting: for years, Hezbollah transformed areas close to the Israeli border into part of its military infrastructure, exploiting civilian terrain, dense vegetation and underground networks to conceal forces and prepare attacks against Israel.
Why Israel Clears Terrain in Southern Lebanon
The basic military logic behind clearing certain areas is straightforward. Dense vegetation provides concealment from Israeli surveillance and can make it easier for small groups of fighters to approach the border, establish firing positions and operate anti-tank weapons. Buildings can likewise be used as observation or firing positions, while underground infrastructure allows personnel and weapons to move while largely protected from aerial observation.
From Israel’s perspective, leaving such terrain unchanged can mean restoring the same conditions Hezbollah previously exploited to establish military capabilities close to Israeli communities.
The Hezbollah Tunnel and Infiltration Threat
The tunnel threat is particularly important. Israeli forces say they have uncovered extensive Hezbollah underground infrastructure in southern Lebanon, including systems associated with the group’s elite Radwan force. In 2026, Israeli authorities announced major operations against tunnel networks near Beaufort Ridge and Qantara that they said had been constructed over years and could support future operations against northern Israel.
That concern cannot simply be dismissed as hypothetical. Hezbollah spent years developing the Radwan force and positioning military capabilities close to Israel’s northern frontier. The October 7 attack fundamentally changed Israel’s assessment of what it means to allow a heavily armed hostile organization to maintain offensive infrastructure immediately across the border.
From Israel’s perspective, preventing a similar scenario in the north is not optional.
Does International Law Allow Israel to Destroy These Areas?
This is where international humanitarian law is more nuanced than the claim that destroying civilian property is automatically illegal.
The laws of armed conflict recognize military necessity, and civilian objects can lose their protection from attack when, by their nature, location, purpose or use, they make an effective contribution to military action and their destruction, capture or neutralization offers a definite military advantage.
International law therefore does not require an army to leave a building, tunnel entrance, firing position or other object untouched simply because it would ordinarily be civilian in character.
If Hezbollah uses a structure as a military position, for example, that structure may become a military objective. Similarly, clearing vegetation providing concealment for an identified military position, infiltration corridor or immediate threat can potentially form part of a lawful military operation.
Military Necessity Is Not Unlimited
Israel nevertheless remains bound by the fundamental principles of distinction, proportionality and precautions.
Destruction cannot legally be justified simply because removing everything near the border would make Israel safer. The anticipated military advantage must meet the applicable legal requirements, and operations affecting civilian property must be assessed according to the circumstances in which they occur.
Critics, including Amnesty International, have alleged that some Israeli demolitions occurred after active fighting had ended in particular locations and after Israeli forces had established control. They argue that some destruction of homes, agricultural land and vegetation therefore exceeded what military necessity could justify.
Other critics contend that creating a permanently uninhabitable buffer zone would raise substantially different legal questions from temporarily clearing terrain necessary for a particular military operation.
Those allegations should be evaluated operation by operation rather than treated as proof that Israel’s entire security strategy is inherently unlawful.
Not All Destruction Is Legally the Same
There is an enormous legal and practical difference between destroying a Hezbollah tunnel designed to move fighters toward Israel and destroying an unrelated civilian home.
The same principle applies to vegetation. Clearing trees concealing an infiltration route, weapons position or observation post is fundamentally different from destroying agricultural land that provides no concrete military advantage.
The central question therefore should not be whether Israel is permitted to “burn southern Lebanon.” It is whether Israel can clear particular areas when doing so is genuinely required to neutralize Hezbollah military capabilities threatening its border.
Under the laws of armed conflict, the answer can be yes.
Israel does not necessarily have to wait for Hezbollah fighters to emerge from tunnels, establish anti-tank positions or attempt to cross the border before responding to an identifiable military threat. International humanitarian law does not categorically prohibit defensive terrain-clearing or the destruction of genuine military objectives simply because those measures cause significant physical destruction.
Israel’s Right to Defense Is Not a Blank Check
Israel’s right to protect its northern communities does not mean that every act of destruction is automatically lawful.
Broad destruction disconnected from concrete military requirements would be much harder to justify, particularly once an area is under effective Israeli control and immediate threats have been neutralized.
That qualification does not weaken Israel’s argument. It strengthens it.
The defensible Israeli position is not that every tree, field or building south of the border may be destroyed in the name of security. It is that after Hezbollah spent years embedding military capabilities into terrain immediately facing Israeli communities, Israel cannot reasonably be expected to restore precisely the battlefield conditions that allowed those capabilities to flourish.
If vegetation conceals military positions, it can be cleared when legally justified. If buildings are used for military purposes, they can become military objectives. If tunnels facilitate attacks or infiltration, they can be destroyed. And if particular terrain provides Hezbollah with a concrete military advantage immediately adjacent to Israel’s civilian population, altering that terrain can, depending on the circumstances, constitute a legitimate defensive measure under the laws of armed conflict.
The Lesson Israel Learned From October 7
For Israel, the lesson of October 7 is that border security cannot rest on the assumption that an enemy positioned immediately across the frontier will never attempt the attack it has prepared for.
The laws of armed conflict do not require Israel to accept that risk. They require Israel to confront it within legal limits by distinguishing military objectives from civilian property, respecting proportionality and precautions, and avoiding destruction that cannot be justified by the applicable rules of military necessity.
Seen through that framework, clearing strategically important parts of southern Lebanon is not inherently a violation of international law.
Where terrain, vegetation, structures or underground networks genuinely contribute to Hezbollah’s military operations, their destruction can be both a rational defensive measure and a lawful one. The real legal question is not whether Israel may reshape the battlefield to protect its border, but where legitimate battlefield preparation ends and unnecessary destruction begins.
