Complex sentence: He claimed that in the region there was hatred among the Armenians and Kurdish who had a bitter history, that there were officials who abused their authority, and that the region became unlawful and people took preventive measures into their own hands.
Split into simpler sentences: He claimed that in the region there was hatred among the Armenians and Kurdish which had their bitter history. He also states that region became unlawful and people took preventive measures into their own hands.