Changes in world power

Conversations with Tom Ashbrook

With Sir John Sawers, former head of MI6, Britain's global spy service. Judi Dench played the role for James Bond. John Sawers sees China eye-to-eye with the US. And soon, the bigger player. "It's not as if we have the superior model that will forever keep us in the lead... America has to share its role in the world with China." And this: "Q is a real live person."