1983: Doomsday/YMMV

• Continuity Drift / Continuity Snarl: Owing to the wiki-style nature of the timeline as well as the various views of the moderators, a number of inconsistencies and debates tend to show up. Which makes maintaining at least some consistency all the more crucial.
• Grey and Gray Morality: The Saguenay War fought between Quebec sovereigntists and the surviving government in northeast Canada. Both sides believed they were fighting a defensive war (in Saguenay's case a preemptive one), both sides had good people fighting honorably for them, and both sides supported criminal elements.
• Moral Event Horizon: Doomsday itself definitely fits the bill. Though a more specific example would be the Soviets' attempt at invading Austria despite its neutrality, beginning with dropping two warheads indiscriminately over Vienna. They failed.
• Never Live It Down: In-verse. In the case of at least some countries, any mention of either the USA or Soviets is bound to bring up memories of how they blew it all up. The Siberians and American successors meanwhile have all but accepted their reputations.