The way nuclear weapons are currently handled in the game are just poor. As soon as the Manhattan Project is completed, the most advanced nuclear weapons are suddenly able to be produced (ICBMs). I think the addition of a few new units and the altering of the requirements should be in order. These are the units that should be introduced: 1): Nuclear Bomb; Has no movement points. Must be loaded onto a bomber. Requires Flight and Fission. Reduces population in target city by 25%. Damages 25% of the improvements built in the city. Wipes out 50% of the units stored in the city. Bomb Shelter reduces that percentage to 25%. If bomber carrying nuke gets destroyed/intercepted, nuclear bomb is lost. 2): Nuclear Missile; Can be loaded onto submarines, fighter planes, and missile silos. Has limited range (10 squares?). Requires Flight, Fission, and Rocketry. Reduces population in target city by 50%. Damages 50% of the improvements build in the city. Wipes out 75% of the units stored in the city. Bomb Shelter reduces this number to 50%. Missiles can be intercepted by SAM Infantry or fighter planes. 3): ICBM; Requires fission, flight, rocketry, and satellites. Unlimited range. Reduces population in target city to 1. Damges 75% of all improvements in city. Wipes out all units in the city. Bomb shelter will reduce this value to 75%. Can only be intercepted by SDI Defense. A new improvement will also be needed. 1): Missile Silo; Used to house nuclear missiles. Can be built by a worker, or work boat, on any terrain except mountain peaks. Allows the loading of nuclear missiles. Can also be built on any ground in any country in which you have open borders provided that it meets the following criteria; Is not within the workable city limits of an ally's city; Is not built on top of an existing improvement aside from roads; The ally has given you permission to build the silos (This will require an addition to the diplomacy). I think these adjustments would be a great way to simulate the advancement of nuclear weapons in this game. The bombs that were first created were pretty low in quality but did the job. When the Cuban Missile Crisis came around, the nuclear weapons had advance quite a bit. Right now, the nuclear weapons available are frighteningly powerful. It would be nice to see this progression emulated in the game. In addition, the use of missile silos would really help create some tension in the game. Imagine building a set of silos in your ally's country on the border with one of your enemies. It would be like the Cuban Missile Crisis played out in Civ4. The additional diplomacy involved in getting permission to set up the silos, the diplomacy needed to have your neighbor disallow the silos, etc. etc. Some great late game strategy would really be added to the game.