Iran fired multiple waves of missiles at Israel on ​Monday and vowed to “punish the aggressor” as Israeli forces pounded Tehran, and oil prices rose after Yemen’s Houthis entered the war in the Middle East.

Israel’s military said two drones ‌from Yemen had been intercepted on Monday, two days after the Houthis fired missiles at Israel for the first time since the start of the US-Israeli war on Iran that has spread across the region.

The Israeli military claimed its forces were targeting what it described as military infrastructure in Tehran and had launched an attack on infrastructure in the Lebanese capital, Beirut, allegedly used by Hezbollah.

The Iran-backed Lebanese group also fired more rockets at Israel on Monday, Israeli authorities said.

US President Donald Trump said on Sunday the United States ​and Iran had been meeting “directly and indirectly” and that Iran’s new leaders — following the killing of Iran’s supreme leader on February 28 — have been “very reasonable”.

But he has also been sending more US ​troops to the region, leading to Iran’s parliament speaker accusing Washington of sending messages about possible negotiations while planning a ground invasion and prompting more defiance ⁠from Tehran.

Iran defiant

Iran’s acting defence minister, Majid Ebn-e Reza, was quoted by the Iranian news agency IRNA on Monday as telling his Turkish counterpart that Tehran would continue to “punish aggressors, create deterrence and ensure war won’t ​repeat itself”.

The month-long war has spread across the region, killing thousands, causing the biggest disruption ever to energy supplies and hitting the global economy.

Oil prices extended gains on Monday, with Brent crude futures up 2.8% to nearly $116 a barrel ​at 0933 GMT.

The effective closure of the Strait of Hormuz by Iran has severely disrupted energy markets as it is a conduit for about a fifth of the world’s oil and liquefied natural gas supplies.

The Houthi attacks on Israel raise the prospect that they could target and block a second important shipping route, the Bab El Mandeb Strait.

The Financial Times quoted Trump on Sunday as saying the US could seize Kharg Island from where Iran exports much of its oil, but also that a ​ceasefire could come quickly.

Taking control of Kharg would require ground troops.

‘Meaningful talks’

“I think we’ll make a deal with them, I’m pretty sure, but it’s possible we won’t,” Trump told reporters on Sunday evening as ‌he travelled aboard ⁠Air Force One to Washington.

Trump said he thought the US had already accomplished “regime change” in Tehran after air strikes killed Supreme Leader Ayatollah Ali Khamenei and other top officials, but said twice that their replacements seemed “reasonable”. Khamenei was replaced by his son, Mojtaba Khamenei.

Trump also has the option of launching a ground offensive, with the US Department of Defence dispatching thousands of troops to the Middle East, but he has not approved any of those plans, according to multiple news outlets.

Israeli strikes

Four weeks of US-Israeli bombardment have failed to silence Iran’s missile and drone batteries, and Iran has replaced leaders killed in the attacks.

Iran confirmed on Monday the death of ​Revolutionary Guards Navy Commander Alireza Tangsiri, several days after ​Israel said he had been killed.

Kuwait said on ⁠Monday it had intercepted five drones in areas under its protection.

Iraq’s Defence Ministry said the Mohamad Alaa air base, besides Baghdad International Airport, was hit by rockets early on Monday, destroying an aircraft but causing no casualties.

Global airlines have begun to increase fares and cut capacity to cope with the surge in the oil ​price, but economic analysts say the industry’s ability to remain profitable may depend on whether consumers pull back on flying as energy costs threaten household ​budgets.

A majority of Americans are ⁠opposed to the war and a military escalation, which would risk a protracted crisis, would likely weigh further on Trump’s already low approval ratings ahead of the November midterm elections for Congress.

Israeli Prime Minister Benjamin Netanyahu said on Sunday he had ordered the military to further expand its operations in southern Lebanon, citing continued rocket fire by Hezbollah.

Israel has said it will seize a chunk of southern Lebanon to create a “buffer zone” against Hezbollah, stoking Lebanese fears of ⁠Israeli military occupation ​that could deepen instability and cause further displacement.

US-based rights group HRANA says nearly 3,500 people have been killed in iran, including 1,550 ​civilians, while authorities in Lebanon say nearly 1,240 people have been killed there.

Over 400 Hezbollah fighters have been killed since March 2, sources told Reuters.

At least ​100 people have been killed in Iraq, and 13 US service members have been killed.