Death Eaters international?

[lea.macleod at gmx.net]

No: HPFGUIDX 16985

This has been bothering me for a while, and it didn´t really come up 
on the MoM and Muggle government thread...

Were/Are the DE an international movement? When Voldemort was in 
power, did he aim at taking over in Britain alone or the whole world?

Wizards do have a rather clear concept of nationality, and wizarding 
institutions (schools, ministries, Quidditch teams) all seem to be 
nationally based. So it seems to me that the DE were based in Britain, 
too. But then there is Karkaroff, and someone (I think Draco) says in 
GoF that at Durmstrang, students actually learn the Dark Arts.
But then, Karkaroff is the only obviously foreign DE we know so far, 
isn´t he?

Any thoughts?