The threat comes a week after Israel attacked Iran, raising fears that retaliation will escalate to war.

The German-Iranian had denied leading a group that bombed a mosque in 2008, killing 14 people.

BBC Verify has analysed satellite imagery from Iran to assess damage from Israeli air strikes.

Ayatollah Ali Khamenei refrained from pledging immediate retaliation while President Masoud Pezeshkian said Tehran did not seek war.

International editor Jeremy Bowen examines what Iran's response might be to Israel's latest attack.

Israel has launched air strikes on Iran, with blasts heard in the capital Tehran.

Israel has carried out its first ever air strike on Iran, following weeks of speculation.

Iran’s air defence said it had “successfully intercepted” the attacks, though “some areas sustained limited damage”.

Israel says it has conducted "precise strikes on military targets" in Iran.

Scant information about the strikes indicate Israel could have reined in some of its more ambitious plans to cause Iran pain.

The IDF says the attack is in response to "months of continuous attacks" from Tehran and its proxies.

Rear Adm Daniel Hagari says the strikes are in response to Iran "relentlessly attacking" Israel.

The arrest of seven East Jerusalemites follows that of seven Israeli Jews allegedly acting for Iran.

US investigators are trying to find out how the highly classified intelligence documents were leaked online.

The documents are said to describe satellite imagery showing Israel moving military assets.

Gangs may be behind the recent attacks but Sweden believes Iran has had a hand in them.

Some Democrats accuse Israel's PM of holding off on agreeing a Gaza ceasefire deal for political reasons.

Talk of how the Israel-Palestine conflict could be resolved has been drowned out amid the increased fighting.

There have been many moments of extreme danger over the past year. This is the worst.

As the conflict across the Middle East widens, rising oil prices are being closely watched.

The high-altitude anti-missile system and a US military crew will bolster Israel's air defences, the Pentagon says.

A group of experts on whether the map of the region is being redrawn, what comes next, and what can help avert all-out war

Addressing a vast crowd in Tehran, Ayatollah Khamenei says the attacks were the "minimum punishment".

Israel has used its elaborate system of air defences to counter missile and drone attacks.

The US fears getting dragged into a war with Iran, while some Israelis want to deal it a body blow, Jeremy Bowen writes.

It is believed to be the first time the two leaders have spoken directly in weeks.

The price of crude oil shot up by 5% immediately after Mr Biden’s comments.

Blasts and gunfire were reported near the Israeli embassies in Copenhagen and Stockholm earlier this week.

Any extended rise raises the possibility of higher petrol prices and gas and electricity bills.

Social media users express a mixture of pride, uncertainty and fear after Iran's strike on Israel.