Israel and Iran traded heavy fire for a third straight day on Sunday, with mounting casualties and expanding targets marking a sharp escalation in hostilities between the longtime foes.

Strikes in both countries persisted throughout the day, as the death toll rose following Israel's large-scale attacks on Friday aimed at crippling Iran's nuclear and military infrastructure, sparking retaliation.

The intensity of the exchanges fuelled concerns of a drawn-out conflict that could engulf the Middle East, even as world leaders call for an end to the violence.

Here are the latest developments:

Death tolls mounted on both sides, as strikes hit residential areas.

Iran unleashed waves of missiles at Israel at the weekend, killing 10 people, including children, and bringing the overall toll to 13 dead and 380 wounded.

Israeli Prime Minister Benjamin Netanyahu vowed to make Iran pay "a very heavy price" for the civilian deaths.

Sirens sounded again in multiple areas of Israel in the afternoon as Iran launched a new barrage.

Israeli attacks on Iran killed at least 224 people since Friday, including children, Iranian media reported, citing the health........

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