Proxy War

"You'll be able to engage in these high stakes arms races": Civilization's Arc of Tomorrow update is trying to make the threat of nuclear apocalypse more interesting

Civilization VII's upcoming free update, Arc of Tomorrow, will extend the game's playable timeline into the near future and introduce more elaborate nuclear war mechanics. The update aims to make mutually assured destruction a more engaging late-game feature with a one-turn missile delay and new defensive options. It also adds proxy war functionality through city states and an expanded economic system.