As war drums beat in Washington, Beijing is exploring new diplomatic avenues to drive a wedge between South Korea and the United States.

As Chinese businessmen protest the latest sanctions, will China’s cooperation on North Korea last?

But don’t expect the system’s opponents to give up so easily.

Signs of discord between Seoul and Washington are surfacing just when a united front is most needed.

The U.S. is rushing to deploy missile defense in South Korea before the elections.

China and the US retain fundamentally different assumptions about the Kim regime’s vulnerability.

The administration’s North Korea policy—and the role of the Syria strikes in shaping it—is coming into clearer view.

The analysis is leading Seoul to push even harder for deployment of the more advanced but controversial THAAD missile defense system.