Get in touch with some famous writers, tell them everything, let them write.
Tell the leaders that when you bomb cities, the morale of enemy population goes up, not down. (IIRC there were hopes that if you bomb cities enough, people in them will demand that their state surrender to end the war)
Does game theory count as “post-1914 technology”?
Oh, and you need to stabilise and empower Russia somehow, so that the idea “attack Russia and just defend youself on all other fronts” does not look promising for Central Powers.
Not the full solution, but some random thoughts:
Get in touch with some famous writers, tell them everything, let them write.
Tell the leaders that when you bomb cities, the morale of enemy population goes up, not down. (IIRC there were hopes that if you bomb cities enough, people in them will demand that their state surrender to end the war)
Does game theory count as “post-1914 technology”?
Oh, and you need to stabilise and empower Russia somehow, so that the idea “attack Russia and just defend youself on all other fronts” does not look promising for Central Powers.