You want to buy something from Amazon France and I had the exact opposite problem
2 weeks ago , I found a charge from Amazon France on my credit card. They apparently had no problem with my bank being in the US! 2 hours later, after many phone calls, including one to France Amazon,and 15 min to find someone who could speak English, They claimed that I signed in on my amazon account -on the French site (which I never even knew existed before that), and bought an Amazon Prime French? I don't think so. I had to argue for almost half an hour to get him to refund me. I said why would I sign up for Amazon France when I live in the US (and have Amazon Prime here), when I couldn't even use it if I bought it? Since noone had used it for anything, he 'agreed' to issue me a refund of the full amount (funny here in the US it's $99 a year, in France it's $57.21)
It took them more than a week to credit me back. He did it in Euros, sent me a confirming email, telling me it would come back to me in US dollars. At least it did!
Either someone hacked my account, or some moron over there decided to try and use my account to buy themselves a Prime account there. I have now added the 2 layer sign in on Amazon to try and prevent any further problems like this.