A NUCLEAR MISSILE destroys every unit on its target tile and around it, and halves the population of a city.
The ground it touches is left POLLUTED.
Requires ROCKETRY and THE MANHATTAN PROJECT. Needs COPPER: +50% shields without.
The Manhattan Project lets EVERY civilization build these, not only the one that completed it.
Fallout drives GLOBAL WARMING, and the world does not forgive it. Some say the blasts wake worse things than warming.