Complex sentence: Nearly all of the killings committed by Russian soldiers in Alkhan-Yurt after they seized the village were reportedly carried out by soldiers who were looting; many civilians who attempted to stop the looting were threatened with death by Russian soldiers, and narrowly escaped summary execution.
Split into simpler sentences: Nearly all of the killings committed by Russian soldiers in Alkhan-Yurt were reportedly carried out by soldiers who were looting. Many other civilians who attempted to stop the looting were threatened with death by Russian soldiers, and narrowly escaped summary execution.