South Korea in G20 Spotlight

South Korea has an historic opportunity when it chairs the G20 meeting in Seoul on Nov. 11-12, for this will be the first time that a non-G7 country has hosted the G20 since the larger body supplanted the G7 as the steering committee of the world economy. But there is a danger that the G20 will now prove too unwieldy. South Korea justifiably views its role as host as another opportunity to mark its arrival on the world stage. But it should make more of its opportunity than this, and instead exercise substantive leadership.