Unfortunately, I wasn't able to implement the UFPR and United Republic endings before the deadline. The original scope was to have 5 possible endings - one for each superpower, MAD, a fail state for when stability dropped to zero, and an ending for remaining independent until the end of the game. That was definitely a bit outside of what I could do in this timeframe, but the skeleton is all there for future development!
Near the end of development I prioritized MAD, since having a big "Do Not Press" button would give people a goal - Press That Button!