Israel and Iran have begun a new round of attacks, as the conflict between the two heavily armed rivals enters its fourth day.

Blasts have been heard in Tehran and sirens have sounded in Israel as US president convenes National Security Council.

Oil prices have resumed their upward climb and U.S. futures are lower after Israel's military issued an evacuation warning to 330,000 people in Iran's capital Tehran.

Trump issued a warning that "everyone should immediately evacuate Tehran," without offering any details on why.

Donald Trump will leave the G7 summit in Canada early after issuing a stark warning for the immediate evacuation of Tehran, as the US president resisted signing a joint statement calling for de-escalation of Middle East hostilities.

The conflict between Iran and Israel continues in the Middle East. Attacks have rocked Tehran and Tel Aviv. Follow along for live updates, news and analysis as the conflict unfolds.

The death toll is rising as Israel and Iran traded missile strikes for a third straight day. The death toll grew Sunday as Israel and Iran exchanged missile attacks for a third consecutive day, with Israel warning that worse is to come.

Israel says it first bombed Iran to stop it from being able to produce nuclear weapons and the “existential threat” they would represent.