Of all the formulations deployed in recent years to describe the emerging world order, G-2 is probably the worst and most dangerous.
Americans don’t like the idea of another rival so quickly achieving strategic parity and influence, and the Chinese are uncomfortable with such a high-level responsibility commensurate with their weight.
The U.S.-China relationship can hardly be described as agreeable, progressive, or even productive. And yet people keep coming back to the idea of a G-2 because the alternatives can seem so inefficient.