The EU is now developing strict rules for carrying cash when traveling to non-European countries and returning to Europe. The revision of the First Cash Control Regulation from 2005, which stipulated that EU citizens should register cash in excess of € 10,000 when leaving the EU or when returning to the customs authorities have to, is what is under review. ………………..

https://www.armstrongeconomics.com/international-news/europes-current-economy/eu-to-restrict-movement-of-cash/