A former prisoner told the BBC's Orla Guerin and cameraman Nicolas Hameon how IS tortured captives.
Explosions rocked the capital overnight as its busiest airport was hit by airstrikes.
Some residents in the Beirut suburb of Dahieh have left their homes amid ongoing air strikes by Israel.
The BBC's Nick Marsh examines how unrest in the Middle East will impact living costs around the world.
Iranians fleeing their country have told the BBC what life under bombardment has been like.
The Israeli military said it began "a wave of strikes” hours after telling civilians living in a large swathe of southern Lebanon to leave their homes immediately.
From the Israeli town of Metula on the border with Lebanon, the BBC's Jon Donnison heard what sounded like a full-on gun battle.
Ben Chu has been looking at what’s happened to marine traffic in the Strait of Hormuz, a key trade passage.
The UK Government advised British nationals to "shelter in place and register your presence" with all flights from Dubai suspended until further notice.
Strikes on Iran's capital, Tehran, continue after the initial combat operations were jointly launched by the US and Israel on 28 February.
Explosions and rising smoke can be seen in Beirut after Israel began striking what it says are Hezbollah targets in the country.
Iranian Americans in Los Angeles dance in the streets on day two of the conflict.
At least nine people have been killed and 27 injured in a missile strike on the Israeli city of Beit Shemesh, emergency services say.
After Iran's Supreme Leader Ayatollah Ali Khamenei was killed in his office on Saturday morning during a US-Israel attack, there were celebrations in several cities.
Iran launched retaliatory attacks in the Middle East after US-Israel strikes across the country.
People in the UK, Spain and the United States celebrated on Saturday following news of the strikes.
The Qataris, the United Arab Emirates, Kuwait, Bahrain and Jordan say they have been intercepting missiles fired from Iran at US military bases on their territory.
The BBC's John Donnison was reporting live from Jerusalem when emergency alerts sounded from his phone.
British woman detained by Iran says it was hard to remain positive in prison, hours before she and her husband were sentenced to 10 years for espionage.
Lyse Doucet is in Iran for the first time since the crackdown on nationwide anti-government protests.
Lyse Doucet reports from Iran, where she says the pain is still raw after unprecedented force was used to put down the protests there.
