The Iranian attack followed Israel’s strike on Beirut’s southern suburbs on Sunday, an operation that hit a Hezbollah stronghold and killed at least two people while wounding more than a dozen others. Tehran had warned that any renewed assault on Beirut would invite retaliation, while Israel said the Lebanon operation was a response to Hezbollah fire aimed at northern Israel earlier in the day.
Air raid sirens sounded across parts of Israel as missiles were detected from Iran late on Sunday. Israel said its air defence systems intercepted the incoming fire or that projectiles landed away from populated areas, with no immediate reports of major casualties or significant damage. Schools were shut in parts of the country, public safety restrictions were tightened, and emergency services were placed on heightened alert.
By Monday, Israel had moved from defensive measures to direct retaliation, striking what it described as military targets in western and central Iran. Explosions were reported in and around several Iranian cities, including Tehran, Isfahan and Tabriz, while Iran imposed restrictions around key airspace and transport hubs. The Israeli military gave limited operational detail, but framed the action as a response to Iran’s direct missile fire.
The exchange marked a sharp deterioration in a ceasefire that had taken effect on April 8 after earlier hostilities involving Iran, Israel and allied armed groups across the region. The truce had never fully halted violence on the Lebanon front, where Hezbollah’s continued confrontation with Israel remained the most volatile fault line. Israel has maintained that it will continue operations against Hezbollah infrastructure, while Iran has linked any wider de-escalation to restraint in Lebanon.
Washington has been trying to prevent the confrontation from overwhelming diplomatic efforts aimed at stabilising the conflict. President Donald Trump had urged Israel to avoid expanding strikes after the Beirut attack, amid concerns that a full exchange between Israel and Iran could derail negotiations involving Tehran. The latest Israeli action, however, showed the limits of American leverage over battlefield decisions at a time when Israel says it faces direct threats from multiple fronts.
The Beirut strike was especially sensitive because it targeted Dahiyeh, the southern suburb long associated with Hezbollah’s political and military command networks. Israel said the site was linked to militant activity, while Lebanese officials and residents reported civilian casualties and damage to buildings. The strike came after a period of mounting cross-border fire between Israel and Hezbollah, with northern Israel repeatedly placed on alert and parts of southern Lebanon exposed to continued Israeli operations.
Iran’s Islamic Revolutionary Guard Corps claimed responsibility for the missile response and said the action was intended to punish Israel for crossing what Tehran described as red lines in Lebanon. Iranian officials also warned that further Israeli or American attacks could bring broader retaliation, including threats against military assets in the region. Israel, in turn, signalled that it would not allow Iran to re-establish deterrence through direct missile fire.
The escalation has drawn in surrounding states through airspace closures, missile alerts and emergency aviation restrictions. Iraq and Syria moved to restrict flights after the Iranian launch, while Saudi Arabia issued alerts around Al Kharj, near Prince Sultan Air Base. Israel also faced a separate missile threat from Yemen, raising concern that the Houthi movement could again become an active front in the conflict.
Energy markets and shipping routes are now under closer scrutiny because any broadening of the conflict could affect the Strait of Hormuz, through which a major share of global oil and liquefied natural gas shipments passes. Oil prices had already been sensitive to the conflict because investors remain alert to the risk of disruption in Gulf waters, attacks on energy infrastructure, or direct pressure on shipping lanes.
The confrontation also complicates Lebanon’s internal position. Hezbollah remains deeply embedded in the country’s security equation, while the Lebanese state has limited ability to restrain the group or shield civilians from Israeli retaliation. The latest Beirut strike underscored the continuing weakness of ceasefire arrangements that rely on armed groups accepting limits without a comprehensive political settlement.
Israel’s leadership faces pressure to respond forcefully after Iran’s missiles, but any sustained campaign inside Iran carries the risk of repeated retaliation and wider regional mobilisation. Iran, meanwhile, is trying to demonstrate that attacks on Hezbollah-linked areas in Beirut will carry a direct cost, even as its economy remains vulnerable to sanctions, internal strain and the prospect of deeper military confrontation.
