Why and how did Iran launch a historic attack on Israel?

TEHERAN – Iran’s use of hundreds of drones and missiles to directly target Israel on Saturday night and Sunday morning set a number of major political and military precedents.
Here’s a look at what political, military and economic considerations Tehran might have factored in while deciding on the attack that has amplified fears of a larger regional war and that could also affect the direction of Israel’s war on Gaza.
The Islamic Revolutionary Guard Corps (IRGC) dubbed the operation “True Promise” to show that top leaders in Tehran, including Supreme Leader Ayatollah Ali Khamenei, intend to make good on their vows of “punishment” for attacks by Israel and others.
The attack was a direct retaliation for an Israeli strike on the Iranian consulate in Damascus on April 1 that killed seven IRGC members, including two generals in charge of leading operations in Syria and Lebanon, along with six other people.It was mainly aimed at strengthening Iran’s deterrence which critics said had been compromised after increasingly confrontational policies and military strikes by the United States and its allies across the region, especially following the January 2020 assassination of top general Qassem Soleimani in Iraq.
Iranian officials also appeared to have exercised a degree of “strategic patience” after the late December assassination of another top IRGC commander in Syria, Razi Mousavi, in an Israeli air raid amid the fallout of the war on Gaza.Inaction, lower-grade strikes, or being content with military action through the “axis of resistance” of aligned groups across the region would in this vein be viewed as too costly for Iran both locally and abroad.
That is true even as Tehran recognises that Israel and the embattled government of Prime Minister Benjamin Netanyahu may see benefits in escalating tensions across the region and forcing the US military into taking more action against Iran. On the other hand, the unprecedented Iranian attacks may have briefly shifted the world’s attention from the deaths of tens of thousands of women and children in the Gaza Strip, but they could translate into soft power gains for Iran in the Muslim world in the long run, when compared with other regional powers. (Al Jazeera)…[+]