As the US government scrambles to explain why the editor in chief of ‘The Atlantic’ was added to a group chat discussing war plans, Andrew Mueller considers just how serious a security breach this is.

Explainer 511: Why is Germany telling Syrians to return home?
07:12

Why has Israel invaded Lebanon?
33:29

Explainer 510: From Angola with love: are there Russian spies in southern Africa?
06:58