Copenhagen and Oslo airports temporary shut down after drone sightings

Drone activity prompted authorities in Denmark and Norway to shut down the main airports in Copenhagen and Oslo for several hours overnight, leading to widespread flight disruptions expected to continue into Tuesday. Both airports resumed operations in the early hours of the day. The origin of the drones remains unclear, but militaries across Eastern Europe are on high alert following reports from Estonia and Poland of airspace breaches by Russian drones. Oliver Farry and Marc Paupé report.