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

The fighting, which began on Friday with a surprise Israeli attack on Iran, has been some of the fiercest and most prolonged in the decades-long enmity between Israel and Iran, raising fears of a wider war that could draw in the United States and other powers.

Sirens sounded in Israel as Iran launched dozens of ballistic missiles in retaliation for Israel's strikes on its nuclear facilities.

South Florida residents visiting Israel endured the third day of the deadly Iranian missile attacks that prompted airports to close.

Israel and Iran have traded missile strikes for a third straight day. Israel on Sunday hit targets in Tehran including the Defense Ministry and sites it claims are tied to Iran’s nuclear program.

Israeli citizens were ordered to head to bomb shelters on Friday night amid retaliatory missile strikes from Iran.