- There's a Second Korean War with the Americans still allied with the south.
- Said Second Korean War tends not to happen when the Americans or southerners are at a lower point. Rather, it happens in the 90s-2000s, at their absolute height.
- The casus belli is often the (more reasonable in strict "plausibility" terms) Americans hitting the north's nuclear facilities in the 1990s. Instead of just trying to hide, recover, and blame the strikes/sanctions for every famine death, the North then launches a suicidal invasion against its on-guard, already alerted, already watching opponents.