Page "Balkan Wars" Paragraph 32

Seeing the omens, Greece and Serbia started a series of negotiations and signed a treaty on 1 June ( 19 May ) 1913.

With this treaty, a mutual border was agreed between the two countries, together with an agreement for mutual military and diplomatic support in case of a Bulgarian or / and Austro-Hungarian attack.

Tsar Nicholas II of Russia, being well informed, tried to stop the upcoming conflict on 8 June, by sending an identical personal message to the Kings of Bulgaria and Serbia, offering to act as arbitrator according to the provisions of the 1912 Serbo-Bulgarian treaty.

But Bulgaria, by making the acceptance of Russian arbitration conditional, in effect denied any discussion and caused Russia to repudiate its alliance with Bulgaria ( see Russo-Bulgarian military convention signed 31 May 1902 ).