Typically when this thread comes up (which is quite regularly), I answer it based on what is available here, rather than trying to guess what might be in "some other" country. The last time I answered it, it was also based on ammo availability before December of 2012.
I'll answer again with the same mindset.
There is nothing I do with a handgun that cannot be achieved with a quality .22 rimfire autoloader, so that's the way I'd go. It would be something that is enjoyable to shoot, easy to carry, and widely available (to avoid scarcity of parts, should any be needed.) I have an AP22 by FEG of Hungary, and that would be ideal except for that last criteria.
So, it would be a similar gun, such as a Walther PPK/S in .22, Bersa/Firestorm .22, or Ruger SR22. A double-action first-shot trigger would be important because this would also be a defensive-use piece.