This Friday, July 3, 2020 satellite image from Planet Labs Inc. that has been annotated by experts at the James Martin Center for Nonproliferation Studies at Middlebury Institute of International Studies shows a damaged building after a fire and explosion at Iran's Natanz nuclear site. An online video and messages purportedly claiming responsibility for a fire that analysts say damaged a centrifuge assembly plant at Iran's underground Natanz nuclear site deepened the mystery Friday around the incident even as Tehran insisted it knew the cause but would not make it public due to "security reasons." (Planet Labs Inc., James Martin Center for Nonproliferation Studies at Middlebury Institute of International Studies via AP)This photo released Thursday, July 2, 2020, by the Atomic Energy Organization of Iran, shows a building after it was damaged by a fire, at the Natanz uranium enrichment facility some 200 miles (322 kilometers) south of the capital Tehran, Iran. A fire burned the building above Iran's underground Natanz nuclear enrichment facility, though officials say it did not affect its centrifuge operation or cause any release of radiation. The Atomic Energy Organization of Iran sought to downplay the fire Thursday, calling it an "incident" that only affected an "industrial shed." (Atomic Energy Organization of Iran via AP)A fire has burned a building above Iran's underground Natanz nuclear enrichment facility, though officials say it did not affect its centrifuge operation or cause any release of radiation.;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 Irans 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)
This Friday, July 3, 2020 satellite image from Planet Labs Inc. that has been annotated by experts at the James Martin Center for Nonproliferation Studies at Middlebury Institute of International Studies shows a damaged building after a fire and explosion at Iran's Natanz nuclear site. An online video and messages purportedly claiming responsibility for a fire that analysts say damaged a centrifuge assembly plant at Iran's underground Natanz nuclear site deepened the mystery Friday around the incident even as Tehran insisted it knew the cause but would not make it public due to "security reasons." (Planet Labs Inc., James Martin Center for Nonproliferation Studies at Middlebury Institute of International Studies via AP)