Three tankers have diverted away from the Strait of Hormuz and changed course, according to marine traffic data reports cited by Reuters.

The empty oil and chemical tankers include the Marie C and Red Ruby, which have now dropped anchor off the coast of the United Arab Emirates instead.

The Strait of Hormuz is the world's busiest oil shipping lane - and there has been speculation Iran could close it off in retaliation to the strikes.

We've written more on the strait and its importance here.

Image source, EPA

Image source, Masoud Kazemi

Iran has been hit with a new wave of Israeli air strikes today. Here's what we know:

Nuclear site hit: Israel says it has carried out strikes on Fordo - the underground nuclear facility that's vital to Iran's nuclear ambitions, and which the US said it also targeted at the weekend. The Israeli military says it struck the site to "obstruct access routes".

Evin prison: In the capital Tehran, part of the notorious Evin prison has been damaged by "projectiles", the judiciary says. Israel's Defence Minister Israel Katz says the prison holds the Iranian regime's "enemies".

Strikes elsewhere: Katz says Israel has also targeted the headquarters of the Basij - a militia the Iranian government often uses to suppress protests - as well as a clock in Tehran that counts down to a predicted date of Israel’s destruction. People in Tehran tell the BBC there have been power cuts.

In Israel: Iran has launched more air strikes on Israel too. No casualties have been reported by Israeli authorities but some 8,000 people are without power in the south, Israel says.

Strong words: Israel says it is striking Iran with "unprecedented force", while US President Donald Trump yesterday floated the possibility of a regime change. "If the current Iranian Regime is unable to MAKE IRAN GREAT AGAIN, why wouldn’t there be a Regime change," he wrote in a post on social media.

As we've been reporting, Israel and Iran have continued to fire attacks at each other.

In Israel, Iranian missiles appear to have struck an area near a power station in the city of Ashdod, causing a large explosion.

There have been no reports of any fatalities.

Lucy Williamson
Middle East correspondent, reporting from Jerusalem

Israel’s targets in this war are widening.

As news broke of it bombing the notorious Evin prison in Tehran, the country's Economy Minister, Nir Barkat, was speaking to the BBC at his office in Jerusalem.

He says “we won’t shed a tear” if the Iranian regime falls, but he declines to confirm or deny whether regime change was one of Israel’s war goals.

Asked why the prison was a strategic target for Israel, he says: “They are attacking civilians in Israel, attacking children, women. They're terrorising us, and as much as they do that, we will hit strategic targets.”

“We know where they live. We know where they do, what they do, their plans. We know everything about them, and we will make sure that we hit them as hard as we can until they stop.”

Image source, Reuters

As we've been reporting, in its latest round of attacks Israel targeted Iran's Fordo nuclear site. Here's a little more about that facility from the BBC's Visual Journalism team and BBC Verify.

Hidden away in a mountainside south of Tehran is an enrichment plant that is vital to Iran’s nuclear ambitions - and Israel’s attempts to dismantle them.

The Fordo nuclear facility - believed to be deeper underground than the Channel Tunnel - long remained out of reach of Israel's weaponry.

Situated about 60 miles (96km) south of the capital Tehran, the uranium enrichment site at Fordo is located in a mountainous region close to the city of Qom.

Designed to withstand air strikes, its underground location shields it from conventional bombs.

The complex at Fordo was originally a series of tunnels used by the country’s elite Islamic Revolutionary Guard Corps, but Iran acknowledged the existence of the enrichment plant in 2009 after it was revealed by Western intelligence agencies.

You can read more in our visual guide to the secretive nuclear site.

Ghoncheh Habibiazad
BBC Persian, World Service reporter

Iranian state TV is reporting "around 500" people have been killed since Israel's 13 June attack on Iran, citing the country's health ministry.

It adds that more than 3,000 people have been injured.

Due to restrictions imposed by Iran's government, BBC journalists are unable to report from inside the country, making it difficult to assess the damage caused by Israel's attacks.

One human rights group that is tracking the conflict - Human Rights Activists In Iran - puts the figure for the number of people killed as nearly double.

Nick Marsh
Transport correspondent

Current data suggests that commercial flights are continuing to avoid airspace above Iran, Iraq, Syria, Jordan and Lebanon.

Airports in the region are warning of potential disruption, but most flights appear to be operating as scheduled as of Monday morning.

More than 120 flights have been delayed at Dubai airport, with a handful also cancelled, while more than 40% of all flights have been cancelled at Jordan's Queen Alia International Airport, in the capital Amman.

United Airlines has suspended flights to Dubai until 3 July and to Tel Aviv until 1 August.

Over the weekend British Airways suspended flights to Dubai and Qatar's capital Doha until Tuesday.

But in an update the airline said: "Our flights to Dubai and Doha are scheduled to operate as normal and our teams continue to keep the situation under review."

Ghoncheh Habibiazad
BBC Persian, World Service reporter

I've received reports from residents in parts of northern Tehran, saying that they've been experiencing electricity outages following Israeli attacks on the capital.

Iran’s national electricity company, Tavanir, says following the attacks a power outage has affected two of the capital's northern districts, but “efforts are underway to resolve the issue as quickly as possible”.

Meanwhile, Iranian state TV has confirmed there has been “temporary electricity outages” in some parts of the capital.

We've just had confirmation from the Israeli military that it carried out air strikes on the Fordo nuclear site.

In a statement, the Israel Defense Forces (IDF) says it did so "in order to obstruct access routes" to the site.

Earlier, Iranian local officials also said Israel had attacked the Fordo nuclear site, according to state media reports.

Steve Rosenberg
Russia editor

Talks are under way in the Kremlin between President Vladimir Putin and Iranian Foreign Minister Abbas Araghchi.

“Absolutely unprovoked aggression against Iran has no grounds and no justification,” says Russia’s president in opening remarks broadcast live on Russian state TV’s rolling news channel.

Putin adds: “I am very pleased you are in Moscow today. It gives us the opportunity to discuss all these difficult subjects and think together how to find a way out of today’s situation.”

Iran’s foreign minister notes that his country has “very close and friendly relations” with Russia, ties which have developed “a strategic nature”.

He says strikes by Israel and the US “violated international rules and norms”.

Earlier this year the presidents of Iran and Russia signed a "comprehensive strategic partnership agreement" between their countries.

But it is not a military alliance and does not oblige Russia to come to the defence of Tehran.

Image source, Anadolu via Getty Images

Orla Guerin
Senior international correspondent

The Kapikoy crossing on Turkey’s border with Iran is one window into the impact of the world’s newest war.

We’ve seen movement in both directions yesterday and today with some Iranians rushing to get back home to loved ones, and others escaping the bombing, struggling with suitcases, backpacks, and small children.

One mother and teenage daughter arrive with little other than a bird cage holding a beloved parakeet.

There is no sense of panic at the border, and people are not flooding in. Some arriving in Turkey tell us they are coming here for business or holidays.

But others say they flee Iran in fear as Israel and later the US attacked.

Ali, who arrives from Tehran this morning, tells us he is “angry, sad and disappointed” about the American bombing. He says “everyone” now hated President Trump, who he refers to as “Mr Orange” and “Mr Taco”.

He says the Israeli attacks has killed men, women and children in their beds and led even former critics to rally around the government in Tehran.

Most people we speak to are not expecting the regime to fall.

Image source, PA Media

UK Prime Minister Keir Starmer has told the BBC this morning that the UK is "absolutely focused on de-escalation in the Middle East".

He explains: "That is because of the concern about escalation for the region and beyond, but also on the impact on our economy."

Iranian local officials say Israel has attacked the Fordo nuclear site, according to reports in local media.

Both the IRNA and Tasnim news agencies quote a statement from the crisis management authority in Qom province, where Fordo is based. The statement says Israel attacked the facility, but adds there "will be no danger or threat to citizens" as a result.

As as a reminder, the US air force also attacked Fordo over the weekend, using large "bunker busting" bombs to hit the underground site.

Here’s what we know about those US strikes.

Ghoncheh Habibiazad
BBC Persian, World Service reporter

Iran's judiciary has confirmed attacks on Tehran's Evin prison, saying "projectiles" hit the prison and caused damage to parts of the facility.

But the situation is "under control", according to the Islamic Revolutionary Guard Corps-affiliated Fars News Agency.

We’ve got more from Israeli Defence Minister Israel Katz’s statement earlier, where he listed some of the Iranian regime targets in Tehran he says were hit by air strikes.

He says the targets include the headquarters of the Basij, a militia the Iranian government often uses to suppress protests.

Katz also says Evin Prison, where political prisoners and “enemies of the regime” are held, was targeted.

BBC Verify has confirmed CCTV footage showing an explosion at the entrance gate of the prison. The Islamic Revolutionary Guard Corps-affiliated Fars news agency has also reported that "it appears that the entrance gate of Evin prison has been targeted using either a drone or a limited explosive operation". There are no reports of anyone escaping.

In addition, Katz says Israel targeted a clock in the city that counts down to a predicted date of Israel’s destruction, the internal security headquarters of the Iranian Revolutionary Guard Corps, and other government-linked sites.

Image source, Reuters

Both Israel and Iran seem to have ramped up their air strikes this morning.

Here's the latest update for today:

In Israel

• Iran has launched air strikes on Israel
• Around 8,000 people are without power in the south, with Israel’s main energy company reporting damage near one of its facilities
• No casualties have been reported by Israeli authorities

In Iran

• Israel has also increased its attacks on Iran, which the defence minister Israel Katz says are being carried out with "unprecedented force"
• Katz also says the targets in Tehran are the "symbols of the regime"
• Iranian military leaders have threatened a "decisive response" to the US, after America attacked Iran’s nuclear site over the weekend, and Donald Trump speculated about an Iranian "regime change"
• There are also concerns Iran may close the Strait of Hormuz, a key shipping lane for global energy exports

Image source, AFP/Getty Images

Bethany Bell
Vienna correspondent

More now from International Atomic Energy Agency's (IAEA) meeting in Vienna.

The head of the UN nuclear watchdog, Rafael Grossi, says very significant damage is expected to have occurred at the Iranian nuclear site at Fordo after US strikes.

Fordo is Iran’s main location for enriching uranium at 60%, close to weapons-grade.

Speaking to the IAEA's board of governors in Vienna, Grossi says that craters are visible at the Fordo site, which is built deep into a mountain.

But he says no one is currently able to fully assess the extent of the damage underground.

He says that given the amount of explosives used, and the sensitivity of the uranium enrichment centrifuges there, it is likely that significant damage has been done.

He calls for a ceasefire to allow IAEA inspectors access to Iranian nuclear sites.

"To achieve the long-term assurance that Iran does not acquire a nuclear weapon and for the continued effectiveness of the global non-proliferation regime, we must return to negotiations,” he says.

• What is the Fordo nuclear site? You can find out more here

Image source, Maxar

Frank Gardner
Security correspondent

The Strait of Hormuz is arguably the world’s most vital maritime chokepoint.

It connects the oil-rich Gulf with the Indian Ocean and it’s the channel through which roughly 20% of the world’s oil supplies flow daily as well as much of its gas.

At just 33km (20.5 miles) wide at its narrowest point, it is flanked by Iran to the north and Oman to the south.

Shipping lanes are carefully managed through a Traffic Separation Scheme that allows inbound ships to pass in one direction, outbound ships in the other, separated by a narrow median of water to avoid collisions.

The oil, gas and petrochemical products that fuel much of the world’s economies, especially China and India, pass daily through this strait.

So if Iran were to carry out its threat to close it off, it could seriously damage the global economy, driving up energy prices.

It would also choke off Iran’s own source of export revenue so it would be an act of economic self-harm.

The US Navy’s 5th Fleet, headquartered in Bahrain, patrols the strait but in wartime its vessels would be vulnerable to a massed "swarm" attack by Iranian Revolutionary Guard's fast torpedo boats and drones.

The Royal Navy has one minesweeper in the region, HMS Middleton, currently at sea.

Emma Haslett
Business reporter

When markets opened on Monday, Brent crude oil jumped 5.7% to $81.40 (£60.77) a barrel – its highest level in five months.

But that rise didn’t last long, and Brent is now back to about $77.20.

Around a fifth of the world’s oil travels through the Strait of Hormuz, a key waterway off Iran’s southern coast. So the lack of a bigger market reaction might surprise some, especially after Iran’s state-run Press TV said parliament had approved a plan to close the strait - although the final decision rests with the Supreme National Security Council.

But Ole Hansen, head of commodity strategy at Saxobank, says oil traders are waiting for Iran’s next move.

If Iran does close the channel, the reaction could be swift.

Reuters says analysts at Goldman Sachs warn Brent could jump to $110 per barrel if Iran takes action.

Image source, EPA

While the Iranian attack on Israel left thousands of Israelis without electricity, the Israeli military says it is striking targets in Tehran linked to the Iranian government with "unprecedented force".

Defence Minister Israel Katz says in a statement that the attacks on the "symbols of the regime" are in response to "every shot at the Israeli home front" and warns the "Iranian dictator will be punished and the attacks will continue with full force".