For one thing, Russian pre-mobilization altered the political chemistry in Serbia, making it unthinkable that the Belgrade government, which had originally given serious consideration to accepting the ultimatum, would back down in the face of Austrian pressure. It heightened the domestic pressure on the Russian administration...it sounded alarm bells in Austria-Hungary. Most importantly of all, these measures drastically raised the pressure on Germany, which had so far abstained from military preparations and was still counting on the localisation of the Austro-Serbian conflict."[39]