What we know about the Pentagon leaks

It's one of the biggest dumps of top secret US defence documents since Wikileaks, and we still don't know who's behind it. A trove of highly classified material from the Pentagon has ended up on Discord, Twitter and 4chan, embarrassing the US and angering some of its closest allies. Today, The Washington Post's national security reporter, Missy Ryan, on why the world's secrets don't seem to be safe in American hands. Featured:  Missy Ryan, national security reporter, The Washington Post