The rebels who hold the besieged eastern half of Aleppo, Syria, have lost more than half of the territory they once controlled to advancing forces loyal to the Bashar al-Assad regime and its Russian allies. Though the opposition groups have been quietly negotiating with Russia in neighboring Turkey, on Saturday Moscow announced it is ready to deal with the United States, which backs some of the militants fighting Assad, to arrange a full withdrawal of Syrian rebel forces from Aleppo. Rebel leaders in Aleppo have reportedly sworn they will not leave the city, and Washington has yet to respond to Moscow's invitation to talks.

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