A really, really interesting report from The Center for a New American Security about how Japanese cult Aum Shinrikyo developed its own chemical weapons program, and what factors enabled it to successfully attack a Tokyo subway with sarin gas. I’m still reading through this and will probably have something longer to say later. But it’s got some very interesting examples of things I’ve noticed in other analyses of successful terrorist attacks: Groups can do things that make them seem comically inept, and they can fail over and over, and still end up pulling off a successful attack. In the end, some of this is about simple, single-minded perseverance. You don’t have to be a criminal mastermind. You just have to be willing to keep trying long after most people would have given up. (Via Rowan Hooper)