Complex sentence: His doctoral thesis investigated the radicalization processes and dynamics of violent conflict, including mass violence and genocide, in the context of modern imperial social systems, specifically focusing on the European Atlantic empires and Western counterinsurgency efforts in Iraq and Afghanistan.
Split into simpler sentences: His doctoral thesis investigated the radicalization processes and dynamics of violent conflict (including mass violence and genocide) in the context of modern imperial social systems. He specifically focuses on the European Atlantic empires and Western counterinsurgency efforts in Iraq and Afghanistan.