When Mikhail Gorbachev, the last leader of the Soviet Union, called for a new world order in 1988, it seemed that the institutions and agreements built to ensure a more stable, open and economically integrated world after World War II might finally gain universal acceptance. Just a few decades later, what scholars call the liberal, rules-based international order and its underlying norms — including free trade, the inviolability of territorial borders and multilateral dispute settlement — is showing signs of stress. Hopes that Russia and China in particular would adopt Western views on matters such as human rights and the rule of law proved misplaced. Yet the greatest threat to a system that some argue has produced the most peaceful and prosperous period in history comes from the growing isolationism and nationalism in its traditional champions, the U.S. and Europe.

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