Hundreds of civilians, mostly in Iran, have been killed by dueling airstrikes despite international pleas for de-escalation.

The death toll is growing as Israel and Iran exchanged missile attacks for a third consecutive day on Sunday, and Israel is warning that worse is to come.

Starting at 10:45 pm local time on Saturday, Israel used an aerial corridor across Tehran to strike more than 80 targets, he said, including what he called a nuclear command center and fuel depots tha...