Officials believe this is a new strategy from Russia to organize attacks on ISIL in airstrike mode . Authorities believed the suspects in Thursday 's gun battle had been providing documents and weapons to men returning from Syria , the intelligence source said . Counterterrorism official tells CNN that soldiers killed in Belgium raid had ties to ISIS . Russian sources tell CNN that they knew of planned attacks and shared information with them .
Officials believe this is a new strategy from Russia to organize attacks on ISIL in airstrike mode . Counterterrorism official tells CNN that soldiers killed in Belgium raid had ties to ISIS . Russian sources tell CNN that they knew of planned attacks and shared information with them .