Drnovsek said in an interview with Slovene Radio on Wednesday that Croatian President Stjepan Mesic's statement that the land border had been determined on the basis of conclusions of the Badinter Commission "has nothing to do with reality".
The Badinter Commission only recognised former borders between republics as state borders, however, considering the fact that 'mixed sovereignty' existed in some areas, the border should be entirely determined and confirmed by the two states, Drnovsek said.
He described the initialled agreement as a well-balanced compromise and that he did not exclude the possibility of its being adopted by Croatia.
He "theoretically" did not eliminate the possibility of new negotiations or arbitration to solve the border issue, but added that the outcome would be very similar to his agreement with former Croatian PM Racan. Slovenia cannot agree to considerably different solutions, and only minor changes are possible, he said.
The Slovene authorities are expected to decide about the proposal for international arbitration after parliamentary elections, but arbitration would require time and money, Drnovsek said, adding that arbitration would basically refer to his agreement with Racan.
In case the border issue is dealt with through international arbitration, the subject of arbitration would be both the sea and the land border, the Slovene president said.