Book Review: Yesiltas, M. & Kardas, T. (Eds.). (2018). Non-State Armed Actors in the Middle East. Geopolitics, Ideology, and Strategy. Palgrave Macmillan, 278 p.; Kapur, S. (2017). Jihad as Grand Strategy. Islamist Militancy, National Security, and the Pakistani State. Oxford University Press, 185 p