President Donald Trump has said he must personally approve the new Supreme Leader as he warns Iran must surrender or face "guaranteed death".
As he backed a Kurdish militant uprising in Iran to aid overthrowing the regime, he dismissed Mojtaba Khamenei, the late Ayatollah's son, as the next leader of the country.
On top of this, the US President warned the Islamic Republic's regime must surrender or they face "guaranteed death" as strikes against Tehran have ramped up over the past days.
However, Iran has unleashed its most intense striking yet on Thursday night, with a string of attacks against Israel and US allies in the Gulf, as it further attempts to drag more countries into the conflict.
On Thursday, Mr Trump said he would be "all for" a Kurdish invasion of western Iran.
Speaking to Axios, the US President related the situation to his recent involvement in Venezuela: "Iran are wasting their time. Khamenei’s son is a lightweight.
"I have to be involved in the appointment, like with Delcy Rodríguez in Venezuela."
He described Khamenei's son succession as "unacceptable" and he was looking for someone that brings "harmony" and "peace" to the country.
Mr Trump has dismissed the late Ayatollah's son as a suitable leader for Iran
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Mr Trump said that Iran did want to strike a deal, but said it is "a little bit late now".
He said the US and Israel wanted to fight more than Iran do now, adding the two countries had endured 47 years of "horror" from the Islamic Republic.
The US President called upon the Iranian regime to surrender on Thursday, speaking in front of David Beckham's Inter Miami football team, he said it was time for the pillars of the Islamic Republic's regime to stand down.
He called on the Iranian Revolutionary Guard, the military and the police to surrender, otherwise they will "face absolutely guaranteed death".
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Mojtaba Khamenei, the late Ayatollah's son, was appointed as the next Supreme Leader by the country's so-called "Assembly of Experts"
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He said: "Now is the time to stand up for the Iranian people and help take back your country.
"You're going to have a chance after all these years to take back your country - accept immunity, we'll give you immunity.
"You'll be perfectly safe with total immunity or you'll face absolutely guaranteed death, and I don't want to see that."
Following the airstrikes against Tehran on Saturday in a "joint operation" between Israel and the US, called "Mission Epic Fury", missiles have been launched all over the Middle East, with targets slowly creeping further north west of the region.
The UAE, Saudi Arabia, Kuwait, Lebanon, Syria, Iraq, Jordan, Azerbaijan have been attacked, as well as missiles intercepted against Cyprus, where RAF base Akrotiri is situated on the south of the island.
According to the US President, the operation was "ahead of schedule".
IDF Chief of Staff, Lieutenant General Eyal Zamir said the US and Israel has been "strategically isolating" Iran and bringing it to a breaking point.
He said that Israel had been launching barrages against Iran without stopping and the operation is "proceeding at the pace" in which they had hoped.
On Wednesday, reports came in from Iranian media that Mojtaba Khamenei has been appointed as the next Supreme Leader of Iran, after his father's death on Saturday.
The appointment was carried out by the country's "Assembly of Experts", who were had been pressured from the Islamic Revolutionary Guard Corps.
According to Iran International, the late Ayatollah's second-eldest child was selected by the Assembly after members held two online meetings to discuss succession arrangements, after Israel bombed the site in the city of Qom where they had originally planned to gather.
Iranian insiders had also identified him as a potential target for a US strike in the days leading up to the war.