Special rules apply if you want to enter these countries
Kosovo
The Green Card currently (2009) does not apply here because Kosovo is not a member of the UN. Your Swedish insurance is therefore not valid, which means that you must take out special motor insurance at the Kosovan border.
Montenegro
The Green Card for Serbia (with the abbreviation 'SRB' on the card) is also valid in Montenegro. At the time of writing (2009) Montenegro does not have its own Green Card bureau; cases are dealt with by the Serbian bureau.