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This photo released Nov. 5, 2019, by the Atomic Energy Organization of Iran, shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. Behrouz Kamalvandi, a spokesman in a report published Thursday, July 2, 2020 by the state-run IRNA news agency, said an “incident” has damaged an under-construction building near Iran’s Natanz nuclear site, but there was no damage to its centrifuge facility. Kamalvandi said authorities were investigating what happened. (Atomic Energy Organization of Iran via AP, File)