Apart from the Home Rule situation in Ireland, were there any other potential flashpoints that could have led to conflict in a TL where the First World War is delayed?
How long would the status of the aristocracy last? Would they still be in charge in 1930?
They had a lot of influence prior to the war but lost a considerable amount of it after.
France might of course start a war over Alsace- Lorraine.
In Austria- Hungary it would probably be more about autonomy for the different regions than democracy.
There would probably be large problems in the Habsburg Empire if no reform attempts were tried.
Russia is of course a problem child. Yes, Russia would be forced to go through a series of changes both when it comes to how workers and peasants are treated, to more power to the Duma, and how border regions like Poland and Finland are represented within the Empire. If Russia want to avoid troubles, and there are several potential sources for that in Russia, there has to be serious changes.
Russia's building up of power is not necessarily a guarantee of peace and could in fact become a prod for war, not least because Russia's strategic focus is against the Ottoman Empire and at some time they intended to attack. They were building up their fleet in the Black Sea and were about to initiate a Med squadron (like Germany had) and had secured basing rights in both Tunisia and Greece (Lemnos? I forget).
If things came to a new head in the Ottoman Empire (and one can not really argue that things were stable) then you could see an extended version of the Balkan Wars this time including Russia.
Now, you can take the view that the Ottoman Empire had weathered the storm and was about to start becoming really strong and too dangerous to attack - with dreadnought battleships, oil production coming online, new railways for strategic movement, and presumably an expedition into the heart of Arabia to put down Ibn Saud.
Interesting - so the Germans thought WWI was their last chance before Russia becomes to powerful and if WWI is avoided, then the Russians might start a war with the Ottomans before they become too powerful!
Now what would the British do, if the Russians attack the Ottomans? IOTL, this was a side-theatre which started after the main thing. ITTL, it would be about control of the straits. Maybe in this situation British interests share more with CP interests?
Russia is a huge Continent.If it's anywhere after 1917 then conflict is unlikely because Russia was industrializing. Germany let war happen in 1914 because the Germans knew it was their last chance of winning.
Russia is a huge Continent.
Why should invade Germany?
If Russian wanted expand the natural candidate was Ottoman Empire to conquered Costantinople.
And in this case British Empire and France would permit?
I don't think.
So Russia was not a real peril for Germany.