CNN Investigates: New satellite imagery reveals Iran may be rebuilding nuclear facilities

Exclusive satellite imagery obtained and analyzed by CNN shows signs Iran may be attempting to rebuild its nuclear facilities. The activity raises questions as to whether Iran violated the memorandum of understanding signed in late June.

Shortly after this video was published, the White House told CNN, "The administration is watching these sites closely because Iran cannot keep the enriched uranium." The Iranian government has not responded to a request for comment. CNN's Katie Polglase reports.