The sun is setting on dollar supremacy, and with it, American power

A serious alternative to the dollar is still a long way off, but the latest shenanigans on Capitol Hill have given the search for them renewed momentum

All great empires – from the Greek, to the Roman, the Spanish and the British - have at their heart a dominant means of exchange which is very much part of their political and social hegemony. Once upon a time, it was Roman coinage which was the world's pre-eminent currency. In more recent times it was the British pound. Today, it's the US dollar to which international investors flock as a safe haven for their money. Highly liquid and apparently reliable – until recently at least – nothing else comes even remotely close to the greenback's dominant position in the international monetary system.

That this position – what Giscard d'Estaing referred to as America's "exorbitant privilege" – could so casually be put at risk by politicians on Capitol Hill is an extraordinary spectacle that may be indicative of a great power already seriously on the wane. 

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