Watch: Footage from across Iran shows scale of strikes

Footage from across Iran has shown the scale of strikes in several cities as the conflict reaches its fourth day. The US and Israel launched attacks on Saturday, killing Supreme Leader Ayatollah Ali Khamenei. Videos shared on social media, verified by the BBC and news agencies, depict multiple explosions and destruction across the country. The US has also released video footage showing military targets being hit. Iran has responded with a wave of attacks across the region. The attack is believed to be retaliation for the killing of Ayatollah Khamenei, but details on the motivations behind the strike are not yet clear.