Israel and Iran launched fresh attacks on each other overnight into Sunday, as US President Donald Trump said the conflict could be easily ended while warning Tehran not to strike any US targets.
At least ten people — including four Palestinians — have been reported killed in Israel overnight, and more than 100 injured.
Iran reported another 60 people including 20 children were killed in attacks on Tehran, with nearly 80 killed Saturday.
Tehran has called off nuclear talks that Washington had said were the only way to halt Israel's bombing, while Prime Minister Benjamin Netanyahu said the attacks by Israel so far were nothing compared with what Iran would see in the coming days.
"We will hit every site and every target of the Ayatollahs' regime, and what they have felt so far is nothing compared with what they will be handed in the coming days," he said in a video message.
Iran's president, Masoud Pezeshkian, warned of a "more severe" response if Israel continued its attacks.
"The continuation of Zionist aggression will be met with a more severe and powerful response from the Iranian armed forces," Pezeshkian said, according to state media.
Trump warns Iran against attacks on US
Trump warned Iran on Sunday that it would experience "the full strength" of the US military if it attacks the United States, reiterating that Washington "had nothing to do" with Israel's strikes on Tehran's nuclear and intelligence facilities.
"If we are attacked in any way, shape or form by Iran, the full strength and might of the US Armed Forces will come down on you at levels never seen before," Trump said in a message on Truth Social.
"However, we can easily get a deal done between Iran and Israel, and end this bloody conflict."
Trump gave no details of any possible deal.
Israel: 10 killed, scores injured in missile attacks
In Israel, the latest wave of Iranian attacks began shortly after 11pm on Saturday local time, when air raid sirens blared in Jerusalem and Haifa, sending around a million people into bomb shelters.
Around 2.30am local time, the Israeli military warned of another incoming missile barrage and urged residents to seek shelter. Explosions echoed through Tel Aviv and Jerusalem as missiles streaked across the skies as interceptor rockets were launched in response. The military lifted its shelter-in-place advisory nearly an hour after issuing the warning.
Yemen's Iran-aligned Houthis said on Sunday that they targeted central Israel's Jaffa with several ballistic missiles in the last 24 hours, the first time an ally of Iran has joined the fray.
Israel said it was simultaneously working to intercept a new salvo of missiles fired from Iran, while also carrying out strikes on "military targets in Tehran". Source: EPA / Abir Sultan
Israeli media said at least 35 people were missing after a strike hit Bat Yam, a city south of Tel Aviv. A spokesperson for the emergency services said a missile hit an 8-storey building there and while many people were rescued, there were fatalities.
So far, at least 10 people in Israel have been killed and over 300 others injured since Iran launched its retaliatory attacks on Friday.
Iran: Dozens killed amid warnings of more attacks
Iran said the Shahran oil depot in Tehran was targeted in an Israeli attack, but that the situation was under control, and that a fire had erupted after an Israeli attack on an oil refinery near the capital. Israeli strikes also targeted Iran's defence ministry building in Tehran, causing minor damage, Iran's Tasnim news agency said on Sunday.
Iran's Revolutionary Guards said Iranian missiles and drones targeted Israel's energy infrastructure and facilities for fighter jet fuel production. The elite force warned Tehran's attacks will be "heavier and more extensive" if Israel continues its hostilities.
Iran said 78 people were killed on the first day of Israel's campaign, and scores more on the second, including 60 when a missile brought down a 14-storey apartment block in Tehran, where 29 of the dead were children.
Israeli strike halts world's biggest gas field
In the first apparent attack to hit Iran's energy infrastructure, the semi-official Tasnim news agency said Iran partially suspended production at the world's biggest gas field after an Israeli strike caused a fire there on Saturday.
The South Pars field, offshore in Iran's southern Bushehr province, is the source of most of the gas produced in Iran.
An Iranian general, Esmail Kosari, said on Saturday that Tehran was reviewing whether to close the Strait of Hormuz controlling access to the Gulf for tankers.
US-Iran nuclear talks cancelled
A round of US-Iran nuclear talks that was due to be held in Oman on Sunday was cancelled, with Iranian Foreign Minister Abbas Araghchi saying the discussions could not take place while Iran was being subjected to Israel's "barbarous" attacks.
Israel sees Iran's nuclear program as a threat to its existence, and said the bombardment was designed to avert the last steps to production of a nuclear weapon.
Tehran insists the program is entirely civilian and that it does not seek an atomic bomb. However the UN nuclear watchdog reported it this week as violating obligations under the global non-proliferation treaty.
