Donald Trump says ‘major combat operations’ under way as explosions reported across the Middle East

• Full report: US and Israel attack Iran

• Analysis from Guardian diplomatic editor

• What we know so far

Blasts have been heard in several cities, including the capital, Tehran, and Isfahan in central Iran.

Reuters reports there are long queues at petrol stations in the capital, as many people try to leave. An unnamed Iranian official who spoke to the news agency said several ministries in southern Tehran had been targeted.