World War 2320 is one of the new single-player levels.
Go to "Single Player", then "Preview Levels".
Just for fun, here are screenshots from my most disastrous attempt (I couldn't get the boss to be friend, or even to leave North America). Still quite doable.http://imgur.com/a/ul5zB
I believe the shots are turn 5, turn 10, turn 19, and turn 23.
As you can see, just about everything went wrong, including my failure to contain the boss towards the end.
Of course, at that point I had enough income that I finished him off pretty quickly thereafter.
Does anyone know how the boss's "spawn armies" ability works? Is it a secondary Reinforcement card that the other players don't have access to? Pretty intriguing.
Edited 5/25/2016 20:08:38