Sirens wailed across Beer Sheba and the area surrounding Israel’s nuclear research centre at Dimona early Saturday — not from Iran, not from Hezbollah, but from Yemen. For the first time since the US-Israeli war on Iran began a month ago, Houthi rebels launched a barrage of ballistic missiles targeting what they called “sensitive Israeli military positions” in the country’s south.

Israel’s military said it intercepted one missile. The Houthis, speaking through military spokesperson Brigadier-General Yahya Saree, said the operation “achieved its objectives successfully.” Whatever the actual damage, the strategic message is clear: the Iran war is no longer confined to the US-Israel-Iran corridor.

A Front That Was Always Coming

The attack did not come without warning. On Friday, Saree appeared on Houthi-run Al-Masirah television to declare that the group had its “fingers on the trigger” — prepared to intervene directly if the escalation against Iran and what he called the “axis of resistance” continued. Hours later, the missiles flew.

Saree framed the strikes as support for what he described as “heroic Iranian resistance” and solidarity with Hezbollah in Lebanon and allied factions in Iraq and Palestine. “Operations will continue until the aggression against all fronts of the resistance ceases,” he said in a video statement released early Saturday.

The Houthis had stayed out of the Iran war until now, despite their well-documented military capabilities and their strategic perch overlooking the Red Sea. During the Gaza war, they attacked more than 100 merchant vessels, sank two ships, and killed four sailors — upending commercial traffic through a waterway that carries roughly $1 trillion in annual trade, according to Al Jazeera. A US-brokered ceasefire between Israel and Hamas in October 2025 paused those attacks. The pause is over.

What Houthi Involvement Means for Israel

Israel is already fighting on multiple fronts. Iranian missiles have struck the Tel Aviv area repeatedly, with cluster munitions and debris from intercepted missiles killing at least one person overnight Friday into Saturday, according to Reuters. Hezbollah continues to launch attacks from southern Lebanon, where Israel carried out dawn airstrikes on Saturday across multiple towns including Nabatiyeh and Majdal Selm, according to Lebanon’s state news agency.

Adding a Yemeni front stretches Israel’s air defence systems and strategic planning further. Mohamad Elmasry, a professor at the Doha Institute for Graduate Studies, described the Houthi entry as “very significant” in an interview with Al Jazeera. The group has demonstrated the ability to strike targets well beyond Yemen’s borders — and to hold critical shipping chokepoints hostage.

The most alarming prospect is the Bab al-Mandab Strait, the narrow waterway off Yemen’s coast that controls sea traffic toward the Suez Canal. With Iran having already effectively closed the Strait of Hormuz — through which roughly one-fifth of global oil supply normally passes — a simultaneous Houthi shutdown of Bab al-Mandab would sever two of the world’s most critical maritime corridors.

“If they decided to move to shut down Bab al-Mandab, the Red Sea and, ultimately, the Suez Canal, then we would have two major choke points shut down along with the Strait of Hormuz,” Elmasry said.

The Proxy Question

The Houthi escalation raises a question central to the entire conflict: how much operational control does Tehran still exercise over its allies? The group has its own reasons for confronting Israel — rooted in ideology, domestic legitimacy, and the dynamics of Yemen’s own civil war. But the timing, coming as Iran absorbs sustained US and Israeli bombardment, suggests a coordinated widening of the conflict designed to strain Western military resources and political will.

It is working, at least on the economic front. Brent crude traded around $107 a barrel on Saturday, roughly 60 percent above pre-war levels, according to Euronews. Diesel in California hit a record average of $7.17 per gallon, the American Automobile Association reported.

US Secretary of State Marco Rubio told G7 counterparts in France that Washington expected to conclude military operations in “weeks, not months.” He pressed European and Asian nations to contribute to securing the Strait of Hormuz — a request that has gone unheeded. President Donald Trump, appearing at an investment forum in Miami, openly questioned NATO’s future: “Why would we be there for them if they’re not there for us?”

A War Without Borders

The conflict that began on February 28 with US and Israeli strikes on Iran has now drawn in Hezbollah in Lebanon, pro-Iran militias in Iraq, and the Houthis in Yemen. Iran has fired missiles at Saudi Arabia, the UAE, Bahrain, and Kuwait. More than two dozen American troops have been wounded at Prince Sultan Air Base in Saudi Arabia over the past week alone, according to AP sources cited by The Guardian. A drone strike on Oman’s Salalah port injured a worker on Saturday — striking a country that had served as a mediator between Washington and Tehran before the war.

Israel struck Iranian nuclear facilities on Friday, including the Shahid Khondab Heavy Water Complex in Arak and the Ardakan yellowcake plant in Yazd Province, according to Iran’s Atomic Energy Organisation. Iran’s foreign minister Abbas Araghchi said Tehran would “exact a heavy price for Israeli crimes.”

The Houthis’ opening salvo at Israel may have been intercepted. The signal it sends was not.

Sources