"German banks [were] told to start hoarding cash [...] This will force the ECB to choose between two options:

1) Support this rebellion and authorize the issuance of more physical cash; or

2) Impose capital controls."

Source: SovereignMan https://quitter.no/url/199234 Spiegel (German) https://quitter.no/url/196227 https://quitter.no/url/199233