Although Iran maintains that its nuclear program is for peaceful energy purposes, Israel has long seen it as a threat. Israeli strikes have hit three of Iran’s nuclear facilities — Natanz, Isfahan and Fordow. Little damage appears visible in satellite imagery of Fordow.

Hundreds of civilians, mostly in Iran, have been killed by dueling airstrikes despite international pleas for de-escalation.

An Israeli strike near Iran's nuclear site caused an explosion and tremor, killing 5. Israel then hit all three major Iranian nuclear sites.

The head of the U.N. nuclear watchdog agency said Monday that there is a possibility of both radiological and chemical contamination within Iran’s main nuclear enrichment facility in Natanz

Israel has carried out wide-ranging military strikes on Iran, hitting sites including some of its most important nuclear facilities.

Roughly 140 miles south of Tehran, Natanz is considered Iran’s main center for uranium enrichment, and it was a prime target of the Israeli strikes. The damage to it appeared to be severe. It is only partially underground and was recently reinforced.

Israel and Iran have traded more missile attacks despite international calls for a halt to the fighting, with neither country showing signs of backing down as the conflict between the regional foes raged for a third day.