Ian Bremmer shares his insights on global politics this week with a look at the China-US economic relationship, North Korea's missiles tests, and the New York Times' investigation of the US drone strike in Afghanistan.

China owns more than $1 trillion US debt, but how much leverage do they actually have?

I mean, the leverage is mutual and it comes from the enormous interdependence in the economic relationship of the United States and China. And it's about debt. And it's about trade. It's about tourism. It's about sort of mutual investment. Now. There is some decoupling happening in terms of labor, increasingly moving domestic in terms of the China five-year plan, dual circulation focusing more on domestic economy, and in terms of data systems breaking up, the internet of things, being Chinese or American, but not both. And indebtedness is part of that. But I don't see that unwinding anytime soon. And certainly, the Chinese knows if they're going to get rid of a whole bunch of American debt, they wouldn't be as diversified in global portfolio. Not as great, it's much riskier. And also, the price of those holdings, as they start selling them down would go down. So, I don't think there's a lot of leverage there, frankly. I think the leverage is interdependent.