If Russian Currency Reserves Aren’t Really Money, the World Is in for a Shock

“What is money?” is a question that economists have pondered for centuries, but the blocking of Russia’s central-bank reserves has revived its relevance for the world’s biggest nations—particularly China. In a world in which accumulating foreign assets is seen as risky, military and economic blocs are set to drift farther apart.

After Moscow attacked Ukraine last week, the U.S. and its allies shut off the Russian central bank’s access to most of its $630 billion of foreign reserves. Weaponizing the monetary system against a Group-of-20 country will have lasting repercussions.