Iran's main nuclear site gets hit: An explosion at the Natanz nuclear site, Iran's main nuclear facility, will likely set back Tehran's nuclear program by months, the Islamic Republic confirmed Sunday. A powerful bomb evidently destroyed infrastructure that Iran has used in recent years to build more advanced centrifuges to enrich uranium — fuel that can be used to make an atomic bomb. The attack has been widely attributed to Israel, though the Israeli government rarely acknowledges actions carried out by its intelligence agencies. Since President Trump walked away from the Iranian nuclear deal in 2018, isolating the US from its European allies, Iran has flouted its own commitments by ramping up its production of enriched uranium and blocking international inspectors from key nuclear facilities. Now, analysts warn that this latest episode could push Iran to move more of its enrichment programs in harder-to-find places underground.