It's a stretch, but some have linked those two with the Franco-Prussian War as well.

Bismarck predicted:

"Jena came twenty years after the death of Frederick the Great; the crash will come twenty years after my departure if things go on like this"

"One day the great European War will come out of some damned foolish thing in the Balkans".

http://en.wikipedia.org/wiki/Otto_von_Bismarck#Forced_to_res...