The writer is global head of the official institutions group at BlackRock and a former IMF officialDays after Russian troops invaded Ukraine, the G7 and a host of allies in Europe and Asia declared a freeze on the assets of the Central Bank of Russia. The move, unprecedented in its swiftness and scale, instantly incapacitated roughly half of its $630bn in international reserves. Up to this point, central bank reserves had only been frozen multilaterally after abrupt regime change — think of the Bolshevik and Chinese revolutions, or more recently Hugo Chávez’s Venezuela. 

Immediately, warnings were uttered about unintended consequences, in particular the stability of the US dollar in the international monetary system. As many have convincingly argued, the Russian reserves freeze alone is unlikely to end the dominant role of the US dollar. But it might, over time, induce major shifts in global monetary relations alongside a broader rewiring of globalisation, making the last 30 years look like a lost golden age. 

Prudence and deliberation are in central banks’ DNA. They do not make rash decisions. So while many central bankers privately felt shock or dismay at the reserves freeze, they do not appear to have significantly reallocated assets away from the dollar or euro.