1878: Let's say Russian didn't stop at San Stefano and continued on to Constantinople with the objective of taking the city. That's my POD in that the Russian keep moving forward in face of British pressure and even warships in the straights. From there it's up to you ... offer likely scenarios and repercussions for Victorian Europe.
Were the Russian capable of taking the city?
What terms could the Czar have forced on the Turks by taking the city?
Where the British bluffing with their warships? Would the British have gone to a second Crimean War over it?
What would be the French position? Likewise German and A-H?
What would a Russian victory/defeat have done to the alliance with Germany and future alliance with France?
....
Were the Russian capable of taking the city?
What terms could the Czar have forced on the Turks by taking the city?
Where the British bluffing with their warships? Would the British have gone to a second Crimean War over it?
What would be the French position? Likewise German and A-H?
What would a Russian victory/defeat have done to the alliance with Germany and future alliance with France?
....