You got your "facts" from a revisionist book writer who wasn't even there at the time.
In contrast, I quoted the ACTUAL PEOPLE INVOLVED.
That is what Keegan did. You don't like it, -- prove the facts were different.
Mobilization for the Balkan War of 1912 did *not* lead to a Great Power conflict
Russia did not mobilize in 1912. The conflict was contained to the Balkans, of which no one ever cared.
I quoted the ACTUAL PEOPLE INVOLVED
Need a fifth time? The Kaiser was convinced to change his mind. And by the way, what was the context and the time when the pronouncement you quote was made?