Complex sentence: In 1978, in the midst of the right-and left-wing conflicts which culminated in the 1980 Turkish coup d'état, Abdullah Öcalan founded the PKK, and launched a war against Turkey in order to set up an independent Kurdish state.
Split into simpler sentences: In 1978, in the midst of the right-and left-wing conflicts which culminated in the 1980 Turkish coup d'état, Abdullah Öcalan founded the PKK. He launched a war against Turkey in order to set up an independent Kurdish state.