Re: Which country?
There are two ways to do it. You can either have Kodi launch an external application for Netflix (which is hardly in the spirit of the thing), or in the v18 builds there's a new feature called "inputstream.adaptive" which allows plugins to run Amazon Prime and Netflix.
v18 is still in development, though, so you're on the potentially unstable nightly builds for that. Give it a little time until Leia is released, and you should be good.