An international driving license is recommended or required in order to drive in these or other countries. Motormännens Riksförbund (The National Association for Drivers) has a summary on its website (in Swedish) http://www.motormannen.se/Resan/internationellt-korkort/ . You’ll also find information about what applies for each country.
You’ll also find other useful information about driving abroad. For example women aren’t allowed to drive in Saudi Arabia, some countries’ police or other authority must approve your driving license before you can drive there (often arranged by the car hire company) and that some countries don’t approve either a Swedish or an international driving license, meaning you’ll have to apply when you arrive.