Who is Fara Harut from Transfer of Power and what is their importance?

Fara Harut is the religious leader of Hamas, as well as the personal spiritual advisor of terrorist, Rafique Aziz. Mitch Rapp kidnaps Harut in order to garner information about Rafique Aziz's movements. Aziz is intensely loyal to Harut, and his disappearance both terrifies and infuriates the terrorist.