Delighted to share my article (in the Korean Journal of Defense Analysis), co-authored with my spouse/Dartmouth colleague Daryl G. Press. In “Five Futures for a Troubled Alliance,” we describe the source of current tensions: the allies’ increasingly divergent strategic priorities with respect to China, and progress in North Korea’s nuclear and missile technology. We outline different strategies for fixing the alliance, and ultimately conclude that the two allies may end up moving in a direction that both allies claim is unthinkable: toward a South Korean independent nuclear capability.