While Washington and Tehran appear closer than they have been in years to reaching a diplomatic understanding, events on the ground across the Middle East suggest that peace may still face a formidable obstacle: Israel’s expanding military presence in Gaza, Lebanon, and Syria.
According to recent investigations, Israel now exercises direct military control over approximately 1,000 square kilometres of territory across Gaza, southern Lebanon, and parts of Syria, significantly expanding its footprint since the conflicts that erupted after October 2023. Satellite imagery and field investigations indicate that Israel has not merely maintained temporary security zones but has entrenched military positions and established new outposts in strategic areas.
The timing is noteworthy. These territorial expansions are taking place precisely when the United States is attempting to secure a broader regional settlement involving Iran. The question facing diplomats is whether Israel’s military strategy is compatible with Washington’s diplomatic ambitions—or whether it risks undermining them.
The Contradiction at the Heart of American Diplomacy
The Trump administration has spent months pursuing negotiations with Tehran aimed at reducing regional tensions. Reports suggest discussions have included sanctions relief, restrictions on nuclear activities, economic incentives, and broader security arrangements designed to lower the risk of conflict. Yet while American diplomats seek de-escalation, Israel appears determined to strengthen its military leverage across multiple fronts.
This creates a fundamental contradiction. Diplomacy relies on confidence-building measures and the perception that all parties are moving toward stability. Military expansion, however, sends the opposite signal. From Tehran’s perspective, Israeli advances in Gaza, Lebanon, and Syria may be viewed as evidence that the regional balance of power continues to shift against Iran and its allies regardless of any agreement reached with Washington.
As a result, Iranian negotiators may become increasingly skeptical about whether the United States can actually deliver the regional stability it promises.
Gaza: The Most Visible Symbol of Expansion
Nowhere is this contradiction more evident than in Gaza. Investigations based on satellite imagery show that Israeli forces have established dozens of military positions throughout the territory, with several bases reportedly constructed after ceasefire arrangements were introduced. Analysts estimate that Israel controls more than half of Gaza and has continued expanding buffer zones and fortified positions despite ongoing diplomatic efforts.
For Washington, this presents a difficult challenge. Any future US-Iran understanding will require reducing regional tensions. However, as long as military operations continue in Gaza and territorial control expands, Iran and many Arab governments are likely to argue that the underlying causes of instability remain unresolved.
The perception that Israel is creating long-term realities on the ground could weaken support for any diplomatic breakthrough announced by Washington.
Lebanon: A Potential Flashpoint for a Wider Crisis
The situation in Lebanon may be even more sensitive. Recent reports indicate that Israeli forces have expanded operations deeper into southern Lebanon, marking the largest advances in years. Military activity has continued despite ceasefire arrangements and ongoing diplomatic efforts.
For Iran, Lebanon represents far more than a neighbouring state. Through Hezbollah, Tehran has invested decades in building influence there. Any perception that Israel is establishing a permanent military presence in southern Lebanon is likely to be viewed by Iranian leaders as a direct challenge to their strategic position.
This creates a dangerous dynamic. Even if Washington and Tehran reach an agreement on nuclear issues or sanctions relief, tensions could quickly re-emerge if fighting intensifies along the Lebanese border. In effect, Lebanon has become one of the biggest variables that could determine whether a US-Iran deal survives beyond the signing ceremony.
Syria Remains the Forgotten Battlefield
Syria has largely disappeared from international headlines, yet it remains a critical piece of the geopolitical puzzle. Since the collapse of central authority in parts of Syria, Israel has steadily increased its military activities near the border and within strategically important zones. Israeli officials have repeatedly argued that maintaining a military presence is necessary to prevent hostile forces from establishing positions close to Israeli territory.
However, from Tehran’s perspective, Syria remains a vital component of its regional security architecture. Israeli expansion in Syrian territory therefore carries implications that extend well beyond local security concerns. It reinforces Iranian fears that regional pressure campaigns will continue regardless of diplomatic concessions.
This perception could make Iranian negotiators less willing to compromise on sensitive issues during talks with Washington.
Is Netanyahu Following a Different Strategy Than Washington?
Perhaps the most important question is whether Israeli Prime Minister Benjamin Netanyahu and President Trump are pursuing the same strategic objective.
On the surface, both governments share concerns about Iran’s regional influence and nuclear ambitions. Yet their methods increasingly appear different. The White House seems focused on achieving stability through negotiated arrangements, while Israel continues emphasizing military deterrence and territorial control.
Recent reports suggest that tensions have emerged between Washington’s desire to preserve negotiations and Israeli pressure for stronger military responses against Iran and its allies. Some Israeli political voices have argued that excessive diplomatic flexibility could weaken deterrence, while American officials appear concerned that military escalation could derail negotiations entirely.
This divergence does not necessarily mean a rupture between the allies. However, it highlights a growing strategic debate over whether diplomacy or military pressure should shape the region’s future.
Why Tehran Is Watching Israel More Than Washington
One of the most overlooked realities of Middle Eastern diplomacy is that Iran often judges negotiations not by what American officials say, but by what happens on the ground.
Even if Washington offers sanctions relief and security assurances, Tehran will likely evaluate whether Israeli actions align with those promises. Continued territorial expansion in Gaza, Lebanon, and Syria could therefore become a critical test of American credibility.
From an Iranian perspective, a deal that reduces economic pressure while allowing military realities to continue shifting in Israel’s favour may not represent a genuine strategic breakthrough. Instead, it could be seen as a temporary arrangement that fails to address deeper regional concerns.
This explains why developments on the battlefield may matter just as much as developments at the negotiating table.
The Real Risk Facing the US-Iran Agreement
The greatest threat to a future US-Iran agreement may not come from disagreements over nuclear enrichment levels, sanctions mechanisms, or verification procedures. Those issues, while complex, can often be resolved through negotiation.
The bigger challenge lies in the broader regional environment.
As long as military confrontations continue and territorial control expands across Gaza, Lebanon, and Syria, the atmosphere necessary for sustainable diplomacy remains fragile. Every new military advance risks empowering hardliners in Tehran who argue that negotiations cannot change realities on the ground. At the same time, continued conflict strengthens voices within Israel that view diplomacy as insufficient for guaranteeing security.
This creates a vicious cycle in which military developments undermine diplomacy, and failed diplomacy encourages further military action.
Can Peace Survive Expansion?
The emerging US-Iran negotiations represent one of the most significant diplomatic opportunities in the Middle East in years. Yet the success of any agreement may depend less on the text signed by diplomats and more on events unfolding across Gaza, Lebanon, and Syria.
Israel’s expanding military footprint is not merely a local security issue. It has become a central factor shaping perceptions of regional stability, American credibility, and Iran’s willingness to trust diplomatic commitments.
If Washington hopes to transform a temporary understanding into lasting peace, it may eventually face a difficult question: can a regional agreement truly succeed while territorial expansion and military consolidation continue on multiple fronts?
The answer may determine whether the current diplomatic opening becomes a historic breakthrough—or another missed opportunity in one of the world’s most volatile regions.
