What's so important about Natanz?
Raffi Berg
BBC Digital Middle East editor
Image source,Satellite image 2020 Maxar Technologies
Out of all of Iran's multiple nuclear sites, Israel appears to have targeted only a small number, including Natanz.
It raises the question: why this facility in particular?
The answer is because Natanz is the principle site for large-scale uranium enrichment - the process which produces material for civilian or military nuclear use.
Iran has denied seeking nuclear weapons and is not known to have produced military-grade uranium, but the global nuclear body the International Atomic Energy Agency (IAEA) recently assessed that it could do, if further refined.
Natanz has tens of thousands of centrifuges and significantly contributes towards Iran's growing stockpile of highly enriched uranium. Disrupting Natanz disrupts that process.
The 2015 nuclear deal restricted what Iran was permitted to do at Natanz, but since Donald Trump withdrew from the deal in 2018, Iran has accelerated activity there.
Israel is believed to have targeted Natanz in recent years with sabotage operations. It was hit by a major cyber attack in 2010, and damaged by explosives reportedly hidden inside a table there 10 years later.
Natanz suffered further, extensive damage in a mysterious attack the following year, which Iran blamed on Israel.