Video: Footage of Iran's New Nuclear Facility Emerges Online

Jeffrey Lewis, an expert on arms control at the American Middlebury Institute of International Studies, has released footage of Iran's new underground nuclear facility on Twitter. The images were captured by a satellite from the American company Planet.

According to the expert, Tehran is constructing a new underground facility for centrifuge assembly near Natanz after the primary building of the site was destroyed in an explosion last July.

The new facility is being built inside a mountain. The footage shows tunnel entrances with two pathways connecting it to the old building. The expert emphasizes that the new facility is comparable in size to the old one.