Image source, Volodymyr Zelensky / X

Reza Pahlavi, the exiled son of the Iranian shah deposed in 1979, has met Ukrainian President Volodymyr Zelensky in Paris.

The 65-year-old claimed he is "uniquely placed" to lead a transitional government in Iran, though US President Donald Trump has expressed doubts over his suitability.

Iran and Russia have been allied for decades. The US has accused the Kremlin of aiding Tehran's war efforts in recent days, and Iranian-designed drones have been used extensively during Russia's invasion of Ukraine.

In comments released after his meeting with Pahlavi, Zelensky said: "Ukraine truly wants to see a free Iran that does not cooperate with Russia and destabilize the Middle East region, Europe, and the entire world."

In a separate post, Pahlavi said: "Few nations comprehend the cost of defending national sovereignty more than Ukraine."

The Qatari Interior Ministry has ordered evacuations for some parts of the country as a "temporary precautionary measure", which will remain in place until "danger has passed".

The warning does not specify the nature of the threat but Iran said it had launched a wave of strikes a short while ago and has previously targeted the Gulf state.

Bahrain has also asked its citizens to take shelter after alarm sirens were activated, while Saudi Arabia also said it had shut down a number of projectiles.

The Israeli military says Iran has launched more missiles and has ordered people to take shelter.

Strikes were also confirmed by Iranian state-controlled media.

It's only a few hours since a similar warning, when Iran and Hezbollah launched a joint strike.

Paul Adams
Diplomatic correspondent

It’s being widely reported in US media that the American military is sending additional forces to the Gulf, including what’s known as an amphibious ready group (ARG), with up to 5,000 Marines and sailors.

The amphibious assault ship Tripoli will join the substantial armada already operating off the coast of Iran.

It’s not clear which other vessels will accompany the Tripoli, but an ARG typically includes ships capable of carrying landing craft, as well as large numbers of helicopters.

The latest deployments suggest the Pentagon is considering an expanded range of options. These could include protecting commercial shipping in the Strait of Hormuz and conceivably some kind of limited amphibious landing.

One possible objective is Iran’s tiny Kharg Island, in the northern Gulf.

Lying 22 miles off the Iranian mainland, Kharg is a vital oil hub, where tankers have been seen filling up with Iranian oil since the war began two weeks ago.

An American Marine unit based in Japan, as well as additional warships, are expected to be transferred to the Middle East, two US officials tell the BBC's US partner, CBS News.

Elements of an amphibious ready group and the 31st Marine Expeditionary Unit are expected to be sent, they say, after the plan was first reported by the Wall Street Journal., external

The group is typically made up of 5,000 marines and sailors across several warships, though there are differing reports in US media about the size of the contingent due to be deployed.

The BBC has approached the US military and the Pentagon for comment, though future troop movements are usually not confirmed publicly.

Daniel Bush
Travelling with the vice president

US Vice President JD Vance addressed the war with Iran on Friday during a speech on the economy in Rocky Mount, North Carolina.

Vance was asked what advice he’s given Trump on the war, and how the conflict squares with his past opposition to so-called forever wars.

The vice president declined to share details on his private conversations about Iran with Trump, saying "it's important for the president of the United States to talk to his advisers without" those advisers "running their mouth".

Image source, Reuters

Hezbollah leader Naim Qassem says the group has prepared itself for a "long confrontation" with Israel, as the sides continue to strike one another.

In a televised address, he adds that Israel will be "surprised" on the battlefield.

The Iranian-backed group, based in Lebanon, has exchanging fire with Israel since 2 March, when it launched air attacks on Israel following the death of Iranian Supreme Leader Ayatollah Ali Khamenei.

Israel has been striking Lebanon heavily, with the military saying it is targeting Hezbollah infrastructure.

Image source, Reuters

The Bahrain and Saudi Arabia Grand Prix events, both scheduled for next month, are set to be cancelled because of the war in the Middle East.

A formal decision to call off the races has not yet been made but is expected before the end of the weekend.

With the deadline to start shipping the freight needed for the event looming, and no sign of imminent resolution to the US-Israeli conflict with Iran, it's been deemed as too great a risk to staff.

Neither race will be replaced, cutting the season to 22 Grand Prix events.

Both Bahrain and Saudi Arabia have seen Iranian retaliatory strikes on their territory.

Ghoncheh Habibiazad
Senior reporter, BBC Persian

Image source, Iranian leader press office/ Handout

Pro-establishment rallies have been held in Iran to mark Quds Day, an annual pro-Palestinian event.

Iran’s state TV rolling news channels gave extensive coverage to marches in several cities including Tehran, Tabriz, Yazd, Qom, Ilam and Shiraz, airing vox pops and statements from senior officials at the rallies who signalled defiance towards the West.

Foreign Minister Abbas Araghchi, who participated in the rallies in Tehran, blamed the United States and Israel for rising oil prices.

Reacting to a strike that hit a crowd in Tehran, Supreme National Security Council Secretary Ali Larijani said it showed the "fear and desperation" of President Donald Trump.

He said a strong power would not "attack a public gathering".

Iranian outlets claimed turnout reached into the millions, but the BBC cannot independently verify this claim.

The Pentagon is expected to send a marine unit and additional warships to the Middle East, two US officials tell the BBC's US partner, CBS News.

Elements of the America amphibious ready group and the embarked 31st Marine Expeditionary Unit are expected to be sent, they say, following a report on the plans in the Wall Street Journal.

The group is typically made up of 5,000 marines and sailors across several warships.

The Israel Defense Forces says it has begun more "extensive strikes" throughout Iran's capital Tehran.

The US is offering rewards of up to $10m (£7.6m) to anyone with information on "key leaders" of the Iranian Revolutionary Guard Corps (IRGC).

A notice issued by the US State Department references 10 individuals in particular, though only six are named.

Among them are new Supreme Leader Mojtaba Khamenei and Secretary of the Supreme National Security Council Ali Larijani, who was pictured attending a pro-establishment rally in central Tehran earlier.

The US says they "command and direct various elements" Iran's IRGC military wing.

Image source, US State Department

Ghoncheh Habibiazad
Senior reporter, BBC Persian

Image source, Getty Images

Iranian outlets have published several photos and videos of officials attending pro-establishment rallies in central Tehran to mark Quds Day, an annual pro-Palestinian event.

They include Iranian President Massoud Pezeshkian, Foreign Minister Abbas Araghchi, Secretary of the Supreme National Security Council (SNSC) Ali Larijani, Police Chief Ahmadreza Radan, and Judiciary Chief Gholamhossein Mohseni Ejei.

In one video, Ejei is seen giving an interview to Iran’s state TV when an explosion happens nearby, with the pro-establishment crowd chanting Allahu Akbar (God is the greatest) near him after the explosion.

In another video, Pezeshkian is seen walking down a street and taking selfies with the crowd.

BBC Persian and BBC Verify have verified footage showing an explosion in the Iranian capital near the crowd.

In his message yesterday, Iran's new Supreme Leader Mojtaba Khamenei called on Iranians to participate in rallies today to help "confront the enemy".

Image source, Reuters

Earlier today, US Secretary of Defence Pete Hegseth said the newly-appointed Iranian supreme leader, Mojtaba Khamenei, is now in hiding - "wounded" and "likely disfigured".

Khamenei, the son of Ayatollah Ali Khamenei - who was killed in US-Israeli strikes last week - was chosen as his successor on Sunday. He hasn't appeared in public so far, only releasing a written statement that was read out on Iranian state television yesterday.

The 56-year-old has kept a low profile, never held government office or given public speeches or interviews.

But for years there have been rumours that he held considerable influence behind the scenes in Iran.

At 17, Mojtaba served in the military for several short periods during the Iran-Iraq War, according to Iranian media. In 1999, he went to Qom to continue his religious studies.

Mojtaba remains a mid-ranking cleric, which could pose an obstacle to his acceptance as the new supreme leader.

• Read our profile of Mojtaba Khamenei

Image source, Reuters

There have been no confirmed attacks on vessels in the Strait of Hormuz over the last 24 hours, according to UK Maritime Trade Operations (UKMTO), a Royal Navy-backed monitoring group which tracks shipping incidents.

UKMTO says at least 29 maritime incidents involving commercial vessels and offshore infrastructure have been reported since 1 March, the day after the US and Israel launched a joint attack on Iran.

Iran has since said it is retaliating by attacking Western vessels in the important shipping channel, but the monitoring group says there has been "no consistent pattern" in those targeted.

Instead, it says Iran's tactic appears to be to create "broad maritime disruption rather than selective vessel targeting".

The threat level in the Strait, as well as the Arabian Gulf and Gulf of Oman, remains critical, an update adds.

Image source, Reuters

The Lebanese health ministry has said that 773 people have been killed and 1,933 others have been injured since the conflict with Israel began.

The US-based Human Rights Activists News Agency (HRANA) reports that, up until the end of 12 March, at least 1,858 people have been killed in Iran, including 1,286 civilians and 199 military personnel.

Israeli authorities say that, as of 10 March, 12 people have been killed by Iranian missile fire since the start of the war. Two Israeli soldiers have also been killed in combat in Lebanon, according to the Israeli military.

The US military death toll has risen to 13 after six crew members on a US military refuelling aircraft were confirmed dead after their plane crashed in western Iraq.

The paramilitary Shia-dominant Popular Mobilisation Forces (PMF) says that 27 people have also been killed in airstrikes in Iraq since the start of the month, reports BBC Monitoring and Iraqi media.

Also in Iraq, a French soldier was killed in a drone strike in Erbil which left six other service members injured.

The UAE Ministry of Defencesays six people have been killed since Iran began its attacks. And in Oman, two Indian nationals were killed in a strike in Sohar, India's Ministry of External Affairs has said.

Ghoncheh Habibiazad
Senior reporter, BBC Persian

Iran police have arrested a person in the southern Fars Province over allegedly “set[ting] up a network across several provinces of the country to sell unfiltered internet via Starlink”, according to a report by the semi-official Mehr News Agency.

The deputy commander of the Fars Province Police has identified the person as a 37-year-old man, adding that a “Starlink device and related equipment were discovered at the suspect’s hideout”.

It is still very difficult to contact those inside Iran amid the internet outage imposed by the government at the start of the war, but some tech-savvy residents have been using Starlink devices and sharing their connection with others.

Using Starlink in Iran carries a punishment of up to two years in prison, and authorities have reportedly been searching for the dishes to stop people from connecting.

The Israel Defense Forces (IDF) says its air force "struck and eliminated several soldiers" that were part of the Basij forces at roadblocks in Tehran overnight.

The Basij is a loyalist volunteer paramilitary force, often used to crack down on protests against the regime. Its forces have been operating checkpoints in Tehran.

The IDF says the strikes were part of its goal to destroy Iran's military systems and operatives.

Israel has said throughout the conflict that they urge Iranians to protest against the regime.

Emergency services have been tackling a fire on the outskirts of Tel Aviv, after Iran's Islamic Revolutionary Guard Corps (IRGC) said it had launched missile attacks on Israel jointly with Hezbollah, according to Iranian state media.

Air alerts sounded in Tel Aviv, central Israel and parts of the occupied West Bank.

Image source, Reuters

Image source, AFP via Getty Images

Image source, Reuters

Questions still unanswered on war's timeline and endgamepublished at 16:40 GMT

16:40 GMT

Bernd Debusmann Jr
Reporting from the White House

Image source, EPA

We still do not have much in the way of insight from Donald Trump or members of his administration on how long this conflict will take, or what the end might look like.

In an interview with Fox News earlier, Trump said only that the conflict will end "when I feel it in my bones".

Defence officials, including Pete Hegseth, have previously only said that US military operations will continue until its objectives - which include the destruction of Iran's naval and missile capacity - are achieved.

And while Trump has said he expects "unconditional surrender" from Iran's government and a hand in choosing a new leader, there is very little indication from the administration of what that might look like.

Trump has previously suggested that he hopes a figure from within Iran's government - someone "internal and eternal" might emerge to serve as the country's equivalent of Venezuela's Delcy Rodriguez.

But so far, Iran's leadership has remained defiant and seemingly so far unwilling to come to a negotiated end to the conflict.