Abdullah Ocalan actively led the Kurdish liberation struggle as the head of the PKK from its foundation in 1978 until his abduction on 15th February 1999. He is a leading strategist and the most important political representative of the Kurdish freedom movement. Under isolation conditions at Imrali Island Prison, Ocalan authored more than 10 books which revolutionised Kurdish politics, including The Political Thought of Abdullah Ocalan (Pluto, 2017), and Prison Writings, Volumes I and II (Pluto, 2007; 2011).