Izabella Kaminska — It all makes sense when you realise there are TWO US dollar currencies

USD inside and outside the US. One is subject to US regulation, the other is not.

The Financial Times — FT Alphaville
It all makes sense when you realise there are TWO US dollar currencies
Izabella Kaminska

See also, BitCon: The book. Izzy looks at Jeffrey Robinson's book, BitCon: The Naked Truth About Bitcoin.