The Americans are the obvious choice. The domestic department feels that we should prepare for this by securing our border with them with a couple more cities, at which point, we will have several staging points for an attack when the miltary department feels we are ready. During this war, we will continue our expansion with settlers to the south and east, while we conquer American cities to the north. To initiate our preparation, I have offered the military department the oppurtunity to choose a new city site as a military training ground, that will build veteran immortals.
The domestic department wishes to delay this war until we have 4 or 5 more cities, as, when our people realize their true potential as the immortals begin crushing their opponents, I wish to have a larger population.