The circulation and handling of foreign currency can be a double-edged sword in any country. It is essential for lively foreign trade, but carries with it risks of foreign currency manipulation by enemies, as well as a general weakening of domestic monetary policy control.

As such, the control of foreign currency is a high national security priority, particularly so when at war with the world’s largest financial power: if left unchecked fake notes could flood the country and cause a financial crisis, or money could be funneled to parts of society to provoke disruption.