Historically, in 1905, in large part due to the Russo-Japanese War, Russia underwent a major revolutionary convulsion. The general understanding is that Tsar Nicholas II proceeded to give ground, very temporarily, to the revolutionaries, then walked back everything serious that he had done or promised once he was in a more secure position.
Certainly, there are two other major monarchs of European powers (Charles I and Louis XVI) who made exactly the wrong decisions to get their heads hacked off and their governments replaced, and Nicholas wasn't that smart or that good at politics - he did, ultimately, get his whole family killed due to precisely this sort of failure. Let's suppose he makes various bad moves in handling the revolutionary elements, giving too much ground when they're weak and trying to take too much while they're strong, resulting in a civil war; given the timeline, you're likely to see a broad-based socialist/liberal alliance against an institutional monarchist force. Since it's our assumption here, the former wins.
Let's suppose, however, that the civil war leaves Russia thoroughly exhausted, just as OTL's Russian Civil War did. Some European powers (France, almost certainly; Germany, maybe) intervene, but fail to turn the overall tide of the war, due to its physical scale and the logistical problems involved. Russia loses some of its peripheral holdings, like Poland and Finland, and becomes a shaky, enervated republic, possibly with a heavy influence from an alternate Petrograd Soviet/Congress of Soviets type body. If the political orientation of post-revolutionary Russia in 1905 (or 1906, 1907, etc; whenever our alt-RCW ends) is anything like OTL's 1917 Russian Constituent Assembly, then it will be heavily influenced by the Socialist-Revolutionaries, if not outright run by them.
It seems to me like this effectively prevents the confluence of factors that produced OTL's WWI, and possibly butterflies any sort of "great war" altogether, keeping wars in Europe more along the line of power-against-power than anything else. Assuming that we don't just see an alternate WWI where post-revolution Russia allies with France and Britain to form the triple Entente, etc - what are the long term consequences?
Certainly, there are two other major monarchs of European powers (Charles I and Louis XVI) who made exactly the wrong decisions to get their heads hacked off and their governments replaced, and Nicholas wasn't that smart or that good at politics - he did, ultimately, get his whole family killed due to precisely this sort of failure. Let's suppose he makes various bad moves in handling the revolutionary elements, giving too much ground when they're weak and trying to take too much while they're strong, resulting in a civil war; given the timeline, you're likely to see a broad-based socialist/liberal alliance against an institutional monarchist force. Since it's our assumption here, the former wins.
Let's suppose, however, that the civil war leaves Russia thoroughly exhausted, just as OTL's Russian Civil War did. Some European powers (France, almost certainly; Germany, maybe) intervene, but fail to turn the overall tide of the war, due to its physical scale and the logistical problems involved. Russia loses some of its peripheral holdings, like Poland and Finland, and becomes a shaky, enervated republic, possibly with a heavy influence from an alternate Petrograd Soviet/Congress of Soviets type body. If the political orientation of post-revolutionary Russia in 1905 (or 1906, 1907, etc; whenever our alt-RCW ends) is anything like OTL's 1917 Russian Constituent Assembly, then it will be heavily influenced by the Socialist-Revolutionaries, if not outright run by them.
It seems to me like this effectively prevents the confluence of factors that produced OTL's WWI, and possibly butterflies any sort of "great war" altogether, keeping wars in Europe more along the line of power-against-power than anything else. Assuming that we don't just see an alternate WWI where post-revolution Russia allies with France and Britain to form the triple Entente, etc - what are the long term consequences?