"For that city, the U.S. is considering drawing up with the Russians a detailed map that would lay out “safe zones.” Civilians and members of moderate opposition groups covered by the truce could find shelter from persistent attacks by Syrian President Bashar Assad’s military, which claims to be targeting terrorists.
One U.S. official said “hard lines” would delineate specific areas and neighborhoods. The officials spoke on condition of anonymity because they were not authorized to discuss the matter publicly.
It was not immediately clear whether Russia would accept such a plan or if Moscow could persuade the Assad government to respect the prospective zones. Some U.S. officials are skeptical of the chances for success, but also note that it is worth a try to at least reduce the violence that has wracked Aleppo for the past week, with hundreds killed and thousands wounded." Washington Post
If I were the R+6 alliance I would agree to this arrangement so long as the safe zones are within government lines and that all who take shelter there are disarmed before entering. Once within the zones, food, shelter and protection to be provided.
That would clear operating space for what TTG called the "inevitable battle for Aleppo." pl