What worries experts about drone proliferation

There have been decades of attempts to make destructive drones, going back to World War I. The technology has advanced significantly since then. Drones now range in size from tiny — as in, fitting in the palm of your hand — to so big they look like little planes.

Stacie Pettyjohn directs the defense program at the Center for a New American Security. She spoke with Marketplace’s Stephanie Hughes about how drones are being used in the war between Iran, Israel and the U.S., including Iran’s Shahed-136 drone.