LAGUNA BEACH – The retreat of the advanced economies from the global economy – and, in the case of the United Kingdom, from regional trading arrangements – has received a lot of attention lately. At a time when the global economy’s underlying structures are under strain, this could have far-reaching consequences.

Whether by choice or necessity, the vast majority of the world’s economies are part of a multilateral system that gives their counterparts in the advanced world – especially the United States and Europe – enormous privileges. Three stand out.

First, because they issue the world’s main reserve currencies, the advanced economies get to exchange bits of paper that they printed for goods and services produced by others. Second, for most global investors, these economies’ bonds are a quasi-automatic component of portfolio allocations, so their governments’ budget deficits are financed in part by other countries’ savings.

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