Russian constitutional monarchy

[RogueBeaver]

What would be the required turning points, and when? My guess is Alexander II to start, and that whatever's cooked up remains closer to the German than British model unless/until there's some lucky successive rolls of the imperial and court dies producing relatively flexible and capable Tsars and would-be PMs. On the policy side, land and military reform seem obvious priorities.

[RogueBeaver]

I assume Nicholas' death is by less than natural causes, given his health and fitness prewar. Such modernization would presumably require someone very capable and relatively liberal pushing it. Question is who that would be and how.