The war in Ukraine may have many positive outcomes: A Russia bled white by its own aggression, a United States that has rediscovered the centrality of its power and leadership, a democratic community that has been unified and energized for the dangerous years ahead. There will also be one very ominous outcome: the rise of a coalition of Eurasian autocracies linked by geographic proximity to one another and geopolitical hostility to the West. As Russian President Vladimir Putin’s folly rallies the advanced democracies, it hastens the construction of a Fortress Eurasia, manned by the free world’s enemies.

Revisionist autocracies—China, Russia, Iran, and, to a lesser degree, North Korea—aren’t simply pushing for power in their respective regions. They are forming interlocking strategic partnerships across the world’s largest landmass, and they are fostering trade and transportation networks beyond the reach of the U.S. dollar and the U.S. Navy. This isn’t, yet, a full-blown alliance of autocracies. It is, however, a bloc of adversaries more cohesive and dangerous than anything the United States has faced in decades.

All the great conflicts of the modern era have been contests over Eurasia, where dueling coalitions have clashed for dominance of that supercontinent and its surrounding oceans. Indeed, the American Century has been the Eurasian Century: Washington’s vital task as a superpower has been keeping the world in balance by keeping Eurasia divided. Now the United States is again leading a coalition of democratic allies on Eurasia’s margins against a group of centrally located rivals—while crucial swing states maneuver for advantage.

Read more at Foreign Policy.