So it seems, all of the above. I can remember when 137% of people said that Roe v Wade was totally settled forever law. I still think it won't be much impaired, because I have observed that ALL ALL ALL social laws in the last, what, 75 years? are antinatalist. Because of gross overpopulation, people moving in an incoherent, inchoate bloc to prevent births. Easy divorce; women working; small families, late marriage, homosexuality promoted,; now "changing sex" promoted, which always prevents reproduction by those people (eugenics, too, in that case); and easy legal abortion. I could be wrong, but the antinatalist direction of society is so obvious that I will be surprised if abortion is outlawed.
Leaving that side issue, I would disagree that the important thing is to remove the reason for the conflict. What Churchill, Roosevelt, and Stalin agreed was to totally smash in utter defeat the Germans, and then no one would have to care what they might still want, unrepentantly. It certainly worked for the Romans, although they usually took a short cut and just killed all the enemy people. Which does work, after all, and frees up the land.
I am not real sympathetic with the idea that one needs to pet and pamper the enemy and make sure he is getting what he wanted in the first place. What he wants is almost always totally bad and aggressive. I think it's key to destroy the enemy or so defeat them that just getting the water back on will occupy their minds for the next several years.