KILIS, Turkey — Across the olive groves and wheat fields of the northern Syrian province of Aleppo, a battle with global dimensions risks erupting into a wider war.
Russian warplanes are bombing from the sky. Iraqi and Lebanese militias aided by Iranian advisers are advancing on the ground. An assortment of Syrian rebels backed by the United States, Turkey, Saudi Arabia and Qatar are fighting to hold them back. Kurdish forces allied both to Washington and Moscow are taking advantage of the chaos to extend Kurdish territories. The Islamic State has snatched a couple of small villages, while all the focus was on the other groups.