Jesper:

> Where is it?
>
> Some maps shows it in Danube, other show it along what probably was
> the Danube in the old day.

I think it depends on who's doing the mapping, and when.
Biger describes the border as being mainly along the Danube, but with
some deviations. "The northern sector of the boundary was settled in
1945 as a boundary line between Yugoslavia's Croatian and Serb
republics. Delimitation was carried out on the basis of an opinion
provided by a special federal boundary commission (the Dilas'
Commission, named after its chairman) The region of Baranya, on the
right bank of the Danube, was allotted to Croatia on the grounds of
possessing a larger Croatian community. Other deviations from the
current riverbed of the Danube date back to the old municipal limits
in the area."
But: "Since autumn 1991 the Croatian region of Baranya, as well as
most of the Slovenian borderland along the Danube, have, in effect
been under Serb occupation and the Serbs consider it part of the
self-proclaimed Serbian Republic of Krajina. In March 1992 these areas
came under international control as Sector East of the United Nations
Protected Areas within Croatia. Despite the presence of peacekeepers
and repeated UN Security Council resolutions ... there have been no
moves toward reintegration of the areas into Croatia."
Since Biger wrote, the population of Krajina have voted to stay in
Serbia, and then been re-occupied by Croatia.
I can see why the map-makers have a problem.

Grant