Israel continues its attacks on Iran, striking the capital Tehran. Three more Iranian nuclear scientists were killed, bringing the total to nine. They were, according to Israel, developing a program to provide the Iranian regime with nuclear weapons. Iranian state television reported that about 60 people, including 20 children, were killed in an attack on a residential complex.

Late last night and into the night in Israel, air raid sirens sent residents rushing to shelters as waves of Iranian missiles streaked across the sky and interceptors rose to meet them, killing at least three people and wounding at least 19 others. An Israeli official said Iran fired about 200 ballistic missiles in four waves.

Defense Minister Israel Katz said today that the Iranian leadership had crossed a red line."If (Supreme Leader Ayatollah Ali) Khamenei continues to fire missiles at Israel, Tehran will burn," he said in a statement.

The United States, Israel's main ally, helped shoot down Iranian missiles tonight, two American officials said.

And Tehran warned Israel's allies that their regional military bases would also be targeted if they helped shoot down Iranian missiles, Iranian state television reported.

After Israel said its operation in Iran could last weeks and called on the Iranian people to rise up against Islamic clerics, fears grew of a regional conflict that could draw in outside powers and have global economic and financial consequences, Reuters notes.

Iran's nuclear facilities at Esfahan and Natanz have been significantly damaged in Israeli strikes on the two sites, an Israeli military official said on Tuesday, adding that it will take Iran more than a few weeks to repair the damage.

Israel has attacked more than 150 targets in Iran with hundreds of munitions, the official said, adding that the air route to the Iranian capital Tehran is effectively open.

The situation also calls into question the nuclear talks between Iran and the US planned for Sunday in Oman.

After the first strikes on Friday, US President Donald Trump called on Iran to"make a deal", adding that the United States"hopes to get back to the negotiating table".

Iran said today that its participation in the talks in Oman remains"unclear."

The attacks prompted several countries in the region to temporarily suspend air traffic, but this morning Jordan, Lebanon and Syria reopened their airspace.

It remains closed over Iran, and Israel's Ben Gurion International Airport also remains closed until further notice.