Your challenge, should you accept it, is: make the Great War, also known as the First World War, last well into the mid-21st Century. It's a considerably ASB challenge, but try to steer away of any things borderline implausible and impossible.
Your challenge, should you accept it, is: make the Great War, also known as the First World War, last well into the mid-21st Century. It's a considerably ASB challenge, but try to steer away of any things borderline implausible and impossible.
Quite easy, if you allow for technicalities. The easiest bet is a God forsaken, completely negligible country to declare war on Germany, only to be forgotten about in the peace talks. Good candidates are e.g. Andorra and Costa Rica.