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PBS News Hour
In Syria, Russia may fight a commander it's battled before
Abu Omar al-Shishani, an Islamic State military commander in Syria, is an ethnic Chechen who fought against Russia as part of the Georgian army in 2008. How did he become one of the top figures in IS? Chief foreign affairs correspondent Margaret Warner speaks with Mitchell Prothero of McClatchy Newspapers, who has just written an exhaustive profile of Shishani.
