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.

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

At least 224 people have been killed in Iran by Israeli strikes, Netanyahu's office said on Monday. The Israel Defense Forces issued a warning to residents in District 3 of Tehran to "immediately leave" ahead of planned strikes there.

Israel is expected to order residents of various neighborhoods in Tehran to evacuate, followed by strikes on infrastructure and government buildings.

Israel was exploiting its advantage, saying it had taken out dozens of surface-to-air missiles in western Iran and killed the intelligence chief of the Islamic Revoluti

Israel warns "Tehran will burn" if Iran continues firing missiles, while state media say 60 people have been killed in a strike on Iran's capital.

Israel targeted a major airport in the capital used for both military and civilian purposes, while Iran attacked Israel with waves of ballistic missiles.