The population and city sprawl were halved by nuclear attack and Soviet invasion in 2104 (in the 1982 story "The Apocalypse War"), with the loss of the entire south in a saturation nuclear strike. The north-west and upper north were also lost, leaving the city stretching from roughly New Hampshire through North Carolina and losing the Canadian territory. A small part of the north west survived: the North West Hab Zone, separated from the rest of the city by a stretch of radioactive wasteland called Nuke Alley and linked to the main city by a bridge. The population remained at around 400 million from 2104 until 2134.