Israel is currently mulling a response to hundreds of drone and missile attacks by Iran amid growing calls to avoid a wider war.
Israel and some of its allies managed to intercept almost all of the missiles fired in Iran's direct attack using iron dome technology.
However, the United States (US) said it would no longer participate in any Israeli response to avoid an increase in regional hostilities as they did over Gaza.
Israel's centrist minister, Benny Gantz, said they would repay the punishment when the time came.
It has been nearly two weeks since Iran telegraphed its plans to respond to an April 1 airstrike on its diplomatic compound in the Syrian capital Damascus that killed several military advisers including two top generals.
Iran blamed Israel for the attack and said it was tantamount to declaring war on them.
In Jerusalem, air raid sirens sounded followed by loud explosions after air defenses intercepted shells over the city. Radar images published by the Israeli military show the entire country covered in red dots that symbolize areas at risk and residents are urged to seek shelter.
US President Joe Biden confirmed to Israeli Prime Minister Benjamin Netanyahu that they remain committed to defending the security of the Zionist state but the US will not support a counterattack by Israel.
Tensions between Israel and Iran have been simmering for decades and have become more apparent since the IDF raid on Gaza.
Iran's allies such as Hezbollah in Lebanon and the Houthis in Yemen have carried out attacks on Israel and its allies over the past few months as a sign of their support for the Palestinian people.
