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Worries of ISIS resurgence following deadly Moscow attack | NewsNation Now
ISIS-K claimed responsibility for a deadly terror attack at a Moscow concert hall Friday that killed at least 137 people and injured more than 100. Jamil Jaffer, George Mason University National Security Institute founder and director, joins "NewsNation Now" to discuss the resurgence of terrorism coming out of that region and who the Islamic State splinter group is. #ISISK #Moscow #Russia