Your goal, is to create the best possible results in the 1919 Paris Peace Conference for the most peaceful 20th century with a POD no earlier then November 11, 1918.
If this needs to be moved to chat, so he it. What needs to be done differently?
Issues
Middle East
Arabian State
Oil
Jewish State
Europe
Reparations from Germany
Alsace-Loraine
Communist Russia
Balkans (Yulglsvia and Austria-Hungry)
Starving masses
Bonus points if you can address European colonies in Africa, Ireland, and Blacks in the US.
Extra bonus points if you can established a world order that last to mordern day