Ambitious project with an advanced UI, menus, buttons etc. Looks like it could be fun, but a lot is missing, like for example a tutorial. I didn't understand what to do in the beginning and there are no hints.
Some countries cannot be selected, like Sweden and Italy. Maybe the selectable countries could be highlighted?
I would avoid bright colours in the map, and not use black for the contours. Perhaps a brown and green colour palette would look nice?
Is the game in real time or turn-based? My guess is that is is real time based on the time speed selector in the top right, which didn't work, by the way.