Reports of precise numbers and accounts of tracking Islamist fighters as they leave Russia and return open up the question of how much the FSB controls these fighters, not only to gather intelligence but to perform missions.
Abdurashid Magomed Aleksandr Borotnikov Chechens fighting in ISIS Feyzulla Margoshvili FSB Gimri Ilya Rogachev ISIL ISIS Islambek Islamic State Jaish al-Muhajireen wal-Ansar Kommersant Mairbek Vatchagaev Novaya Gazeta Oleg Syromolotov Pankisi Valley Ramzan Kadyrov Russian Foreign Ministry's Department on New Challenges and Threats Russian National Anti-Terrorist Committee Russian-speaking ISIS fighters Salakh ash-Shishani Suleiman Yamadayev Vostok Battalion White House Conference on Countering Extremism Yana Amelina Yelena Milashina Zapad Battalion