In the opinion of M. Venizelos, her pact did not oblige Greece to go to Servia's assistance against Austria, but at most to mobilize 40,000 men.[2] Treaty obligations apart, neutrality was also imposed by practical considerations. It was to the interest of Greece--a matter of self-preservation--not to tolerate a Bulgarian attack on Servia calculated to upset the Balkan balance of power established by the Peace of Bucharest, and she was firmly determined, in concert with Rumania, to oppose such an attack with all her might. But as to Austria, M. Venizelos had to consider whether Greece could or could not offer her ally effective aid, and after consideration he decided that she {8} should not proceed even to the mobilization of 40,000 men, for such a measure might provoke a Bulgarian mobilization and precipitate complications. For the rest, the attitude of Greece in face of Servia's war with Austria, M. Venizelos pointed out, corresponded absolutely with the attitude which Servia had taken up in face of Greece's recent crisis with Turkey.[3] On that occasion Greece had obtained from her ally merely moral support, the view taken being that the _casus faederis_ would arise only in the event of Bulgarian intervention.[4] Accordingly, when the Servian Government asked if it could count on armed assistance from Greece, M. Streit, Minister for Foreign Affairs under M. Venizelos, answered that the Greek Government was convinced that it fully performed its duty as a friend and ally by adopting, until Bulgaria moved, a policy of most benevolent neutrality. The co-operation of Greece in the war with Austria, far from helping, would harm Servia; by becoming a belligerent Greece could only offer her ally forces negligible compared with the enemy's, while she would inevitably expose Salonica, the only port through which Servia could obtain war material, to an Austrian attack; and, moreover, she would weaken her army which, in the common interest, ought to be kept intact as a check on Bulgaria.[5] A similar communication, emphasizing the decision to keep out of the conflict, and to intervene in concert with Rumania only should Bulgaria by intervening against Servia jeopardize the _status quo_ established by the Bucharest Treaty--in which case the action of Greece would have a purely Balkan character--was made to the Greek Ministers abroad after a Council held in the Royal Palace under the presidency of the King.[6]