On 7 June 2026, Iran launched missile strikes against northern Israel in response to Israeli attacks on Lebanese territory. Tehran had previously warned Israel against targeting areas covered by the ceasefire agreement brokered with the United States, which included provisions relating to Israel’s military operations in Lebanon.
US President Donald Trump reportedly urged Israeli Prime Minister Benjamin Netanyahu not to retaliate. According to Trump, the Iranian strikes had not caused any fatalities, and a response would trigger a new cycle of fighting that could drag on for an extended period while serving neither Israeli nor Iranian interests. Furthermore, Washington and Tehran were believed to be moving closer to an agreement that could bring the war to an end.
Despite these warnings, the Israeli leadership chose to respond, launching air strikes against Iranian targets. Tehran, in turn, vowed retaliation.
Emerging Red Lines
This marks the first time in the course of Iranian-Israeli confrontations that Iran has attacked Israel on behalf of another state, namely Lebanon. As such, the episode may represent a significant turning point in the balance of power across the Middle East.
For decades, particularly after the Egyptian-Israeli peace treaty in the late 1970s, Israel conducted what it described as pre-emptive military operations against Palestinians in Gaza and the West Bank, as well as against neighbouring countries, without facing military intervention from other regional powers.
Israeli leaders often referred to this situation as “freedom of action”. In practice, Israel operated with little regard for international law or the sovereignty of neighbouring states, while benefiting from Western military support, financial backing and diplomatic protection.
Benjamin Netanyahu sought to expand this doctrine beyond Israel’s immediate surroundings to encompass the wider Middle East. Initially, Israel targeted Iranian military and diplomatic sites outside Iran. It later expanded operations to targets inside Iran itself before launching attacks on Iranian nuclear facilities alongside the United States in June 2025. A new offensive followed on 28 February 2026.
The assumption behind these successive attacks was that Iran would eventually become accustomed to Israeli strikes and refrain from responding, much as several neighbouring states had done in the past.
Instead, those calculations failed. Iran transformed the conflict into a source of pressure on Washington and leveraged the confrontation to push the United States towards restraining Israeli military operations, not only against Iran but also against Lebanon.
The Iranian strike on northern Israel placed the Israeli leadership in a difficult position.
If Israel refrained from responding and complied with Trump’s request, its deterrence posture would appear weakened, potentially inflicting a political setback on Netanyahu severe enough to damage his prospects ahead of the September 2026 parliamentary elections.
If, on the other hand, he ignored Washington’s request and attacked Iran, he risked fighting alone without the American backing Israel has traditionally relied upon. Trump could also use a variety of political and military levers to pressure Israel into ending the confrontation.
Growing Fault Lines
The Israeli response also created a dilemma for Trump.
On one hand, he wants the current escalation to end. His administration seeks de-escalation with Iran to reduce the financial and political costs of the ongoing confrontation and to focus on domestic priorities such as preparations for the FIFA World Cup and the upcoming midterm elections.
Trump is also concerned that renewed conflict could deepen public opposition to the war, particularly among Americans who increasingly view it as a conflict being fought on Israel’s behalf. Rising energy prices, which have affected large segments of the American population, add further pressure.
On the other hand, Trump faces significant pressure from Israel’s allies within the United States, including Republican lawmakers and pro-Israel lobbying groups, all of whom are urging stronger American support for Israel against Iran.
The latest Israeli offensive highlights a growing divergence between the interests of Trump and Netanyahu.
Trump seeks de-escalation to minimise potential electoral damage ahead of the congressional midterms. Netanyahu, by contrast, benefits politically from projecting himself as a strong leader defending Israel against its enemies and prioritising Israeli security over external considerations, including the interests of a US president he has repeatedly described as Israel’s greatest friend.
This clash of interests is not merely tactical. Both leaders face legal and political vulnerabilities and are acutely aware that political defeat could expose them to court proceedings with potentially serious consequences.
However, the disagreement may prove temporary. If both men emerge politically strengthened after their respective electoral battles, they may once again find common ground in efforts to exhaust Iran militarily and economically.
For now, Trump may choose not to participate in further military operations against Iran, leaving Israel to confront Tehran on its own.
Such a scenario would echo the US approach in Yemen. Washington initially joined Israel in confronting the Houthis before later reaching a separate agreement with the movement, effectively stepping back while Houthi attacks against Israel and Israel-bound shipping through the Bab al-Mandab Strait continued.
At present, this appears to be the most likely outcome, although the situation could change if Republicans perform strongly in the midterm elections.
Iran Holds the Advantage
The current balance of the confrontation appears to favour Iran.
Israel faces several constraints that limit its ability to sustain a prolonged conflict without American assistance.
Foremost among these is its dependence on US supplies of munitions and air defence interceptors. Numerous reports have pointed to a significant depletion of American stockpiles of key defensive missiles.
Trump may be reluctant to provide unrestricted support to Netanyahu after Israel ignored his request and proceeded with attacks on Iran. He may instead seek to constrain Israeli actions by limiting access to resources essential for continued military operations.
At the same time, the Houthis could choose to close the Bab al-Mandab Strait, increasing economic pressure on the United States while simultaneously restricting supplies heading towards Israel. Such a development would likely deepen tensions between Trump and Netanyahu.
If Iran succeeds in forcing Israel to halt this latest round of fighting and cease its attacks on Lebanon, it will have established a new strategic principle in the Middle East: restricting Israel’s freedom of action on the Lebanese front.
From there, similar constraints could eventually be extended to repeated Israeli military operations against Palestinians in the occupied territories.
In practical terms, Israel would increasingly find itself operating within red lines defined not by its own calculations, but by Iran’s.
A Potential Historic Shift
Should Iran succeed in driving a wedge between the United States and Israel, or even encouraging open disagreement between the two allies, the moment could prove historically significant.
It would invite comparisons to the Suez Crisis, when US President Dwight Eisenhower compelled Israel, Britain and France to halt their military campaign against Egypt.
Any such distancing between Washington and Tel Aviv would represent a major political blow to Netanyahu, who has long portrayed himself as the Israeli leader most capable of securing American support for Israeli objectives.
It would also further undermine Israeli confidence in American backing, which remains the cornerstone of Israel’s security strategy and its protection from international accountability.
The Return of Regional Isolation?
If these two developments occur simultaneously, Israel becoming accustomed to Iranian-imposed red lines while its relationship with the United States weakens, Middle Eastern states may begin reassessing long-held assumptions.
For years, many governments viewed Israel as an unstoppable regional power and concluded that cooperation, or even closer alignment, offered strategic advantages.
Israel was also widely seen as a gateway to influence in Washington and a pathway to securing American protection.
If Israel is no longer perceived as dominant, and no longer viewed as the most effective channel into the White House and Congress, regional governments may reconsider the value of normalisation and cooperation.
The costs associated with such relationships, measured against international law violations, actions in Palestinian territories and military operations against neighbouring states, may increasingly outweigh the benefits.
In that scenario, the momentum behind regional normalisation could slow significantly, leaving Israel once again facing a period of profound regional isolation.
Such an outcome would expose a deeper strategic failure: the belief that military victories alone could secure lasting political integration across the Middle East.
