As a new refugee crisis is unfolding in Syria, German chancellor Angela Merkel is blaming the Russians and their air-strikes. In a rare moment of insight, the leaders of the western coalition army realized that there was a connection between dropping bombs on a country, and the people of that country trying to flee. This caused them to admit that, maybe, not only Russian bombs, but American ones and French ones too, could have that effect. Which would mean that the larger refugee crisis that has been happening over the past two years might just be their own doing.
Once this realization hit home, the leaders of those countries manned up, and, ready to take responsability, decided that each of the members of the western coalition army would tak in refugees in numbers proportional to their military involvment in Syria and elsewhere. Given that this decision was highly unpopular with some segments of their (voter-)population, but it being too late now to backpedal after their big announcement, these same countries quickly reduced their military actions abroad, so as to minimize the number of refugees they had to take in. And as the world as a whole realized that it was a lot less fun to play war when you had to take responsibility for the people on both sides that were affected by it, peace started to spread.