Secret Ending

"With your commitment to reduce your arsenal in the most dire of times you sent a message for all countries worldwide. It was a bold move and you took a big risk. Congratulations."

Information
The Secret Ending is achieved by disarming your nuclear arsenal completely. When doing so, all other nations will also disarm their arsenals. This ending is complete when no nuclear missiles are left.

Upon completion, the game will finish with the third possible ending. The secret winning screen says "YOU WIN", unlike the default end screen that says "YOU WIN?", referring to the saying that "nobody wins in a nuclear war, there's only a degree of losers". The winning message that is shown after every game when unlocking a letter hints at this ending to the player.