On 28 July 1914, Leopold Count Berchtold (pictured), the Austro-Hungarian Minister of Foreign Affairs, sent a coded telegram to Laszlo Count Szogyeny, the Austro-Hungarian Ambassador to Germany. In his telegram, Berchtold discusses the British proposal for diplomatic mediation.
Count Berchtold to Count Szogyeny. Vienna, 28 July 1914.
Received your Excellency’s telegram of 27 July.
I ask your Excellency to thank the [German] Minister of Foreign Affairs in my name for having kindly communicated the reasons why the German government thinks it imperative to send on the English proposal of mediation, and to add that I fully understand the motives which motivate the German cabinet.
In the meantime, [the German Ambassador to Austria-Hungary] Herr von Tschirschky has informed me of the English propositions, and tomorrow I will give the German Ambassador our reasons for not accepting them.
The above for your information and for communication to the Minister of Foreign Affairs.
Source: 1919 Austro-Hungarian Red Book, with minor edits.