First time playing and this is how the ending felt

Defcon is a minimalist, indie game by Introversion Software. You have a world map that occupies the whole screen. It's divided in six countries. You have control of one. Your job is to deploy missile silos, radars, and other buildings and naval units in a way that helps you defend your citizens from the other player's militaries as the counter goes from defcon 5 (peace) to defcon 1 (thermonuclear war).