I've toyed with the idea that the Belgians agree to allow the Germans safe passage through their countryside, and as a result the French go on the offensive and occupy Belgium instead. This does two things - it removes Britain's casus belli and it sets her at odds with France. She won't declare war either way as a result. I think it's the best bet for keeping Britain neutral.
But, that's not what this topic is about.
What was the immediate Ottoman Empire reaction to the Austro-Hungarian declaration of war? Turkey's involvement in WWI is often overlooked in discussion, despite their interests in the Balkans. The more I think about it, the more I worry that there are just too many factors coming into play. Would Austria be able to coerce Bulgaria into joining the war? Would they need to?
Also, what's stopping the Germans and Russians?