The past two decades have seen the construction of a tiered system of international liquidity provision, the first tier including those whose credit is sufficient for a swap line with the Fed, the second tier including those who can offer acceptable collateral to the Fed, and the third tier...

The global dollar system, though repeatedly reported to be on its last legs—most recently in the Global Financial Crisis of 2008, but most famously in the Nixon devaluation of 1971—has repeatedly instead consolidated and gone on to further geographical expansion (McCauley 2021). The key...