Israel has launched airstrikes on military targets in Iran in retaliation for an Iranian missile attack earlier this month.
Iran's Foreign Ministry has said the country has the right to defend itself “against external acts of aggression.”
Here's what else we know so far:
When and where did the attacks take place?
Israel struck military sites in Iran early on Saturday. Iranian media began reporting explosions in and around the capital Tehran after 2 a.m. local time (11:30 p.m. BST).
Around 2:30 a.m., the Israeli Defense Forces (IDF) confirmed it was carrying out “precise” strikes on military targets in Iran.
They said the strikes ended just after 6 a.m. The IDF said it hit about 20 targets, including missile production facilities and other military sites.
There are no indications that nuclear, energy or oil targets have been hit.
According to Iranian state media, Israel's attacks have hit military bases in Tehran, as well as locations in western Ilam province and southwestern Khuzestan.
What was the damage caused?
According to the Iranian state news agency IRNA, two soldiers were killed in the air strikes on Iran.
Iran said its air defense system successfully repelled Israel's attacks. They said there was “limited damage” in some locations.
Why did Israel attack Iran?
Saturday's attacks were in response to Iran's October 1 attack on Israel, when Tehran fired 200 ballistic missiles at Israel.
This Iranian attack was part of a tit-for-tat conflict that has escalated in recent months.
In July, Israel killed a top Hezbollah commander in an airstrike on Beirut, and the next day Hamas political leader Ismail Haniyeh was killed in an explosion in Tehran.
In late September, Israel assassinated Brigadier General Abbas Nilforoushan, a senior Iranian official, and Hezbollah leader Hassan Nasrallah.
Dozens of people were also killed in mid-September when communications equipment used by Hezbollah was targeted.
Will Iran retaliate?
Iran has said it has “the right and obligation to defend itself against external aggressive acts.”
The Foreign Ministry called the Israeli attack a violation of international law, adding that Tehran “recognizes its responsibilities in regional peace and security.”
Iranian media have downplayed the airstrikes, and US news channel Axios reported that US and Israeli officials believe Iran will respond militarily, but in a limited manner.
Military analyst Matthew Savill of the Royal United Services Institute said the Iranians played down the attack “as if to avoid further escalation (for now).”
What have world leaders said about the attack?
A senior Biden official has described the Israeli strikes as “precise” and emphasized that the strike should be an “end to the firefight between Israel and Iran.”
The Kingdom of Saudi Arabia has “expressed its condemnation and disapproval of the military attacks on the Islamic Republic of Iran, which are a violation of its sovereignty and a violation of international laws and norms.”
The Kingdom also called on “all parties to exercise the utmost restraint and reduce the escalation.”
Pakistan has also strongly condemned the Israeli attacks. They said the strikes “undermine the path to regional peace and stability and also represent a dangerous escalation in an already unstable region.”
Palestinian militant group Hamas also issued a statement on social media app Telegram, saying the attacks are a “blatant violation of Iranian sovereignty and an escalation that threatens the security of the region.”
The United Arab Emirates also expressed its “deep concern over the continued escalation and its impact on regional security and stability.”
