Israel, Lebanon and the elasticity of ‘security’

In the lexicon of Middle Eastern diplomacy, few words have been stretched as thin — or as often — as “ceasefire.” The recent understandings between Israel and Lebanon, reportedly backed by US assurances aimed at preventing further escalation, were meant to signal a pause and, ultimately, a pathway toward de-escalation. Yet, on the ground, the pattern is familiar: violations persist, tensions simmer and the line between deterrence and provocation continues to blur.

This is not a new dynamic. Israel’s security doctrine has long relied on preemption, ambiguity and the creation of what it frames as necessary “buffer zones.” In practice, however, these measures often evolve into something more durable — territorial footholds justified by security narratives that are rarely relinquished once established. Lebanon, particularly its southern frontier, has historically been the testing ground for this approach.

The current moment is shaped by overlapping crises. The war in Gaza has recalibrated regional threat perceptions, while the risk of a wider confrontation involving Iran and its network of allies — most notably Hezbollah — has elevated Lebanon’s strategic significance. Against this backdrop, any Israeli military activity, even when framed as limited or preventive, carries broader implications. It is not merely about tactical strikes; it is about redefining the rules of engagement in a region already on edge.

What raises concern is the apparent disconnect between diplomatic commitments and operational realities. If Washington has indeed conveyed assurances regarding Israeli restraint, the continuation of cross-border actions — whether aerial incursions, targeted strikes or surveillance operations — undermines their credibility. It also reinforces a long-standing perception in the region: that ceasefires involving Israel are often conditional, flexible and subject to unilateral reinterpretation.

It is not merely about tactical strikes; it is about redefining the rules of engagement in a region already on edge

Hani Hazaimeh

From Beirut’s perspective, this creates a strategic dilemma. The Lebanese state, already constrained by internal political fragmentation and economic collapse, lacks both the capacity and the leverage to enforce the terms of any truce. Hezbollah, meanwhile, operates according to its own calculus, one that is closely tied to Iran’s regional posture. The result is a fragmented deterrence structure, in which multiple actors operate under different thresholds for escalation.

The comparison to Gaza is not incidental. In both theaters, Israel has demonstrated a willingness to reshape geographic and security realities using the justification of neutralizing threats. In Gaza, this has manifested in large-scale military operations and the effective reconfiguration of territory. In Lebanon, the approach is more incremental but follows a similar logic: establish facts on the ground, normalize them over time and integrate them into a broader security architecture.

This raises a critical question: Where does temporary security end and de facto territorial change begin?

International law offers a clear framework regarding sovereignty and the inadmissibility of acquiring territory by force. Yet enforcement remains elusive, particularly when geopolitical alignments shield certain actions from meaningful accountability. The absence of consequences does not merely enable repetition, it institutionalizes it.

In a region already defined by overlapping conflicts, the margin for miscalculation is dangerously thin

Hani Hazaimeh

For the US, the stakes are equally significant. As both a strategic ally of Israel and a self-declared broker of regional stability, Washington’s credibility hinges on its ability — or willingness — to ensure that its commitments translate into observable outcomes. If assurances are perceived as rhetorical rather than operational, their deterrent value diminishes rapidly.

More broadly, the continued erosion of ceasefire norms has systemic implications. Each violation, however limited, contributes to a cumulative destabilization that makes future agreements harder to negotiate and even harder to sustain. In a region already defined by overlapping conflicts, the margin for miscalculation is dangerously thin.

None of this suggests that Israel’s security concerns are fabricated. The threat environment along its northern border is real, shaped by Hezbollah’s capabilities and its integration into a wider Iranian strategy. But security cannot be sustainably achieved through the perpetual expansion of operational space at the expense of neighboring states’ sovereignty. Such an approach may yield short-term tactical advantages, but it entrenches long-term instability.

Lebanon, for its part, remains the weakest link in this equation — not by choice but by circumstance. Its fragility makes it both a battleground and a bargaining chip in a larger geopolitical contest. This is why adherence to ceasefire terms is not a procedural detail, it is a necessity.

The current trajectory suggests that the ceasefire is less a binding agreement than a temporary pause within an ongoing conflict cycle. Unless there is a shift — either through enforceable mechanisms or a recalibration of strategic priorities — the pattern will persist: negotiation, violation, normalization and repetition.

In the end, the issue is not whether ceasefires are declared. It is whether they are meant to hold.

• Hani Hazaimeh is a senior editor based in Amman. X: @hanihazaimeh