Currencies do exist in a vacuum. Which is why currency manipulation is international and national fraud; your laborers and trading partners lose. It's also why

Currencies do exist in a vacuum. Which is why currency manipulation is international and national fraud; your laborers and trading partners lose. It's also why we have a purchasing power parity. Managing a currency through the control of interest rates, taxes, employment etc. are the legal ways of the game to manipulate your currency. Centralized clandestine devaluation of ones currency while government sponsored companies buy real estate worth trillions all over the world, as well as commodities and rare resources, not to mention the jobs it's created and among local populations and the access to foreign citizens data, is an outright slap in the face to any sort of partnership.