The Israeli military has said it carried out several wide-scale waves of strikes across Iran, as supporters of the Islamic Republic staged rallies to celebrate the appointment of a new supreme leader.
Mojtaba Khamenei, a hardline Shia Muslim cleric close to the powerful Revolutionary Guards, was chosen on Sunday to succeed his father, Ayatollah Ali Khamenei, who was killed in a strike at the start of the war with the US and Israel nine days ago.
In his first reaction to the decision, US President Donald Trump said he was "not happy".
Meanwhile, Iran launched new barrages of missile and drones at Gulf Arab states hosting US military bases and Israel, where one person was killed on Monday.
The price of oil also surged to more than $100 a barrel for the first time in four years, with the war disrupting exports and forced production stoppages in the region.
