The conversation between human and AI assistant.
What is happening in Aleppo and why?
Have there been any attempts to resolve the conflict through negotiations?
Yes, there have been several attempts to resolve the conflict through negotiations. However, these efforts have largely failed due to the entrenched positions of the various factions and the misaligned interests of external actors involved in the conflict.  The most recent effort was the UN-mediated Geneva peace talks in early 2017, which didn't lead to any substantial progress.