According to new information, Israel’s historic attack on Iran this weekend targeted military installations connected to Tehran’s nuclear program and ballistic missile manufacturing, as well as air defence systems guarding vital oil and gas infrastructure, using precise air and drone attacks.

In the most recent direct conflict between the regional rivals, Israel launched its first open strike on Iran on Saturday, moving the Middle East one step closer to a full-scale conflict.

The supreme leader of Iran says the military should determine how to react to the Israeli strike.

Iran seemed to downplay the airstrikes, which killed four troops, in the early aftermath. Western authorities had encouraged Israeli Prime Minister Benjamin Netanyahu not to attack oil or nuclear sites in the widely expected retaliation to an Iranian ballistic missile barrage on Tel Aviv and military outposts on October 1st, fearing full-scale war and shocks to the world’s energy economy. Attacks on nuclear or energy infrastructure would go beyond a “red line,” Iranian authorities have warned on several occasions.

The locations of the attacks nonetheless indicated that Israel is capable of hitting high-value targets if the escalation continues, even though satellite pictures of the impacted facilities in Iran and information from the New York Times indicate the Israeli leader followed the advise of friends.

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The mission, which was code-named Days of Repentance, seems to have been intended to weaken Iran’s capacity to strike Israel and increase its susceptibility to attacks in the future.

According to the Israel Defence Forces (IDF), its primary focus was on long-range missile manufacturing facilities, radar stations, and air defence. According to Israeli media, it was executed in two waves and featured over 100 planes and drones.

According to the New York Times, which quoted three Iranian and Israeli sources, Israeli warplanes struck air defence systems in Syria and Iraq during the first phase of the strike, making it impossible for Tehran’s allies to intercept the planes as they were flying.

In an effort to weaken Iran’s defences against such strikes, attacks were also launched against its air defence systems. According to the document, some of the targeted systems are meant to safeguard significant locations, such as the Bandar port in the south of the nation, the Abadan oil refinery, the Bandar Imam Khomeini petrochemical complex, and the gasfield Tange Bijar.

According to the source, the Parchin and Parand military sites, as well as three Russian-made S-300 air defence systems in the Tehran area, were also struck. Videos posted on social media seemed to depict damage to a business that produces equipment for the oil and gas sector close to the city.

At Parchin, close to Tehran, a location the International Atomic Energy Agency claims is connected to Iran’s nuclear program, satellite images reviewed by the Associated Press and Reuters revealed one completely destroyed facility and other damaged ones. At the adjacent Khojir military complex, which western analysts say is a long-range ballistic missile development facility, two structures looked to have sustained damage.

Iran’s formidable Revolutionary Guards were not targeted, according to the Tasnim news agency, but the New York Times indicated that three of the guards’ missile production facilities in Tehran province—Falagh, Shaid Ghadiri, and Abdol Fath—were struck.

Although Israeli media claimed around 20 attacks, it is still unknown how many sites were targeted and how much damage was done. According to Netanyahu, the Israeli operation achieved its objectives by destroying air defence systems and rendering missile development facilities used to threaten Israel inoperable.

Regarding the claimed devastation at the military bases at Parchin, Khojir, and Parand, the Iranian army has not responded. It stated that although the country had intercepted the majority of the Israeli missiles, “limited damage” had been done to the air defence systems in Khuzestan, Ilam, and Tehran.

Iran’s supreme leader, Ayatollah Ali Khamenei, made his first public remarks about the strike on Sunday, stating that it “should neither be minimised nor exaggerated” and that military authorities will talk about Iran’s next course of action, implying that retaliation might not be immediate.