Israel, Iran escalate tit-for-tat airstrikes as regional war fears grow over nuclear escalation

In a dramatic intensification of hostilities, Israel and Iran exchanged direct airstrikes across their territories on Saturday, as Israel launched what it described as its largest-ever offensive targeting Iran’s nuclear infrastructure. The strikes, aimed at crippling Iran’s ability to produce a nuclear weapon, have triggered fears of a broad regional war that could drag in multiple nations and destabilize global energy markets.

Air raid sirens rang out across Tel Aviv and Jerusalem before dawn, with Israeli defence systems intercepting several incoming missiles launched from Iran. The military confirmed dozens of projectiles were fired, with some successfully shot down while others struck residential areas. Emergency response teams were dispatched to multiple locations to assess damage and treat casualties, though officials did not immediately release final figures.

Simultaneously, Iranian state media reported several explosions in Tehran. The semi-official Tasnim News Agency said two missiles struck Mehrabad airport, igniting fires and damaging infrastructure near sensitive military sites. The airport is also home to a key air force base. Israeli reports confirmed missile impacts in Tel Aviv, while Reuters journalists in Jerusalem reported hearing loud booms overnight, though it remains unclear whether they resulted from successful interception or direct hits.

According to Iranian outlet Fars News Agency, Saturday’s barrage represented the third wave of missile attacks in less than 24 hours. The earlier two waves came in response to Israel’s Friday morning strikes on Iranian nuclear and military sites, including the Natanz enrichment complex and residences of high-ranking Revolutionary Guard officers.

Why Israel struck Natanz and key nuclear sites

Israel’s military claimed its offensive, code-named Operation Rising Lion, was a necessary act of self-defence. The attack reportedly targeted over 100 Iranian locations with hundreds of munitions, including command posts, research facilities, and missile storage depots. Central among them was the above-ground pilot enrichment facility at Natanz, which, according to the United Nations’ nuclear watchdog, has been destroyed.

Rafael Grossi, director general of the International Atomic Energy Agency (IAEA), told the UN Security Council that the agency was still collecting data on Israeli strikes against additional Iranian nuclear facilities at Fordow and Isfahan. Western officials believe the Israeli operation was intended to pre-empt Iran’s alleged progress toward acquiring sufficient weapons-grade uranium—something Iran has repeatedly denied, insisting its program is for peaceful energy purposes.

Israeli intelligence sources, speaking through their UN envoy Danny Danon, asserted that Iran was “days away” from having enough fissile material for multiple nuclear warheads. The strikes, Israel said, were “an act of national preservation.”

Tehran’s retaliation: a calculated escalation

In response, Iran launched what its officials described as a massive and proportionate response. According to Iranian state media IRNA, more than 200 ballistic missiles and drones were fired toward Israeli cities in three waves. Though Israeli and U.S. military systems reportedly intercepted a large number, several missiles hit targets in Tel Aviv and nearby Ramat Gan.

Iran’s UN envoy, Amir Saeid Iravani, reported that 78 people—including senior military officials—were killed in the Israeli strikes, while over 320 others, most of them civilians, were injured. He condemned the attacks as violations of sovereignty and international law and accused the United States of complicity.

Iran’s Supreme Leader Ayatollah Ali Khamenei declared that Israel had “started a war,” vowing that “nowhere in Israel would be safe.” In Tehran, missiles hit airport facilities and caused fires, adding to speculation that Iranian response capabilities are not merely symbolic but operationally structured to escalate if provoked.

Timeline of escalation: from proxy war to direct conflict

The confrontation marks a dangerous evolution in the longstanding shadow war between the two nations. While Iran and Israel have engaged in decades of covert operations, cyberattacks, and proxy battles—often through Hezbollah in Lebanon or militia networks in Syria and Iraq—April 2024 marked a turning point. That month, Iran launched a direct missile and drone barrage into Israeli territory for the first time since the 1991 Gulf War.

Israel responded in October 2024 with Operation Days of Repentance, a limited strike campaign on Iranian military infrastructure in Syria and Iraq. However, nuclear facilities were deliberately avoided in that operation. The latest exchange represents the first direct aerial assault between the two countries’ homelands and shifts the conflict from proxy-based friction into state-to-state confrontation.

Global institutions and world powers urge restraint

United Nations Secretary-General António Guterres issued an urgent call for restraint, warning that the escalation could engulf the entire Middle East. Rafael Grossi reiterated his concern that military actions near nuclear facilities pose “catastrophic risks to regional and global security.”

NATO Secretary-General Mark Rutte stated that while Israel has a right to defend itself, military operations near nuclear sites set a dangerous precedent. U.S. Secretary of State Marco Rubio said the U.S. had not been involved in Israel’s planning or execution but confirmed that American forces helped intercept Iranian missiles. He also warned Iran against targeting U.S. interests in the region.

China expressed “deep concern” over the developments and called for immediate de-escalation, while Russia condemned the Israeli attacks as “unilateral aggression.” France and the United Kingdom called for diplomatic dialogue and emphasized the importance of protecting nuclear non-proliferation norms.

Regional governments navigate a tightrope

Reactions from Middle Eastern nations reflected deep unease. Saudi Arabia, the United Arab Emirates, and Qatar issued statements condemning the Israeli strikes and calling for restraint, even as they expressed concern about Iran’s destabilizing behavior. Jordan closed its airspace to avoid accidental engagement, and Egypt reiterated its longstanding opposition to military action targeting nuclear infrastructure.

Meanwhile, public sentiment in the Arab world has grown increasingly vocal. Protests erupted in cities across Iraq, Yemen, and Lebanon, where demonstrators denounced Israeli actions and criticized Western nations for backing Tel Aviv. However, regional governments appeared keen to avoid further escalation, fearing spillover effects.

Market shock and economic ripple effects

Financial markets were quick to react to the widening conflict. Brent crude jumped more than 9% on Friday, surpassing $91 per barrel for the first time since October 2023. Investors also dumped airline and shipping stocks amid fears of commercial airspace disruptions and oil transit bottlenecks.

Israel closed its airspace for all commercial and civilian flights for 48 hours. Tehran’s international airports canceled outbound flights, particularly those serving religious pilgrimage destinations. Global carriers, including Lufthansa and Emirates, announced rerouting of major routes to avoid potential strike zones.

Diplomatic deadlock: Trump urges talks, Tehran resists

U.S. President Donald Trump, now serving a second term, stated that Tehran could “still avoid further devastation” by agreeing to a new nuclear deal. Trump’s previous withdrawal from the Joint Comprehensive Plan of Action in 2018 triggered a breakdown in diplomatic trust between Washington and Tehran.

Talks had resumed earlier in 2025, with European mediators involved, but collapsed after Iran rejected a draft that included stricter enrichment caps and permanent IAEA monitoring. Tehran now argues that negotiations are meaningless while under military threat.

The Trump administration, meanwhile, has floated the idea of using the current conflict as leverage to push for a broader regional security pact. However, Iranian officials remain resolute, stating they will not negotiate “under fire.”

Future outlook: risks of regional war remain high

As of Saturday night, both sides had signalled an intent to continue operations. Israel maintained that it had the right to act pre-emptively against nuclear threats. Iran declared that retaliation would continue for “as long as Israeli aggression persists.” While regional allies like Hezbollah and Hamas remain degraded, experts warn that direct conflict between Israel and Iran could lead to unpredictable third-party interventions.

Military analysts note that any further Israeli strikes on operational Iranian reactors or fuel storage sites could invite retaliatory actions from Iranian proxies, increasing the likelihood of a multi-front war involving Syria, Iraq, and the Gulf.

Unless mediation efforts gain traction in the coming days, this conflict may represent the most dangerous flashpoint in the Middle East in decades—with global security, energy markets, and nuclear non-proliferation all at stake.