For a few seconds there I thought the OP was talking about buying a machine gun!

Nona, it does read like that at first, doesn't it?

>> I just read the thread about Italian police with their machine guns. We buy them sometimes but usually we don't<<

I don't think that I've seen a website or publication that lists all the countries where the IDP is required. I guess it would be difficult to keep up with all the nations--you'd have to keep checking to see if they changed their laws regarding driving license documentation. And there are a lot of countries in the world.