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

The U.S. did not provide any military assistance or have any involvement in the Israeli strike, a U.S. official told ABC News.

Israel unleashed airstrikes across Iran for a third day Sunday and threatened even greater force as some Iranian missiles evaded Israeli air defenses to strike buildings in the heart of the country.

The Israeli Air Force has reportedly destroyed a significant portion of Iran's ballistic missile launchers amidst escalating military tensions that have lasted four days. Israel claims to have achieved full aerial dominance over Tehran,

Iran launched a new wave of missile attacks on Israel early Monday as both countries continue to exchange strikes.

In Israel, 10 people, including two children, were killed and more than 100 injured during a second night of Iranian strikes, according to Israeli authorities.