As a historian I am sure you know that the assassination of the Archduke was by the group known as the Black Hand. A radical Christian group. At the time once again there was growing anger between the Moslems and Christians within the Slavic peoples. Though not ever really investigated I think it is about time it was. But you prefer to give it that good old Jewish fault line.
from the article: For first time, Assad regime claims responsibility for firing at Israel