At a time of growing challenges to international peace and prosperity and intensifying resource constraints, working with emerging powers to defend and renew the global order has become increasingly central to U.S. strategy. Compared to the Asia “pivot” unveiled during the first Obama administration, U.S. engagement of emerging powers has generated little publicity and comparatively modest interest from longtime U.S. partners in Europe. Yet the stakes are high. The choices made by a handful of economically dynamic, strategically located, rising democracies — “global swing states” — may decisively nudge the international order toward renewal or fragmentation. If the United States, its transatlantic allies, and these key emerging powers can come together to strengthen a system on which all depend, they are more likely to thrive. If the global order instead becomes less cohesive, they — and the broader world — will suffer the consequences.