sentences:  Among Russian troops deployed to the village was an FSB agent from Nalchik, Alexander Litvinenko, whose "ad-hoc" squad came under friendly fire from Grad rockets.Heavy losses (including friendly-fire incidents) triggered a collapse in morale among the Russian forces.Russian military analyst Pavel Felgenhauer reported that "based on information from observers and participants of the fighting, it can be concluded that Interior Ministry officers were on the verge of mutiny."