Salah Mesbah Khalaf (Arabic: صلاح مصباح خلف‎), also known as Abu Iyad (أبو إياد) (1933 – 14 January 1991) was deputy chief and head of intelligence for the Palestine Liberation Organization, and the second most senior official of Fatah after Yasser Arafat.Khalaf has been described as "of medium height and sturdy build, undistinguished in a crowd." When Christopher Dobson, hoping for an interview, was introduced to him in Cairo in the early 1970s, Khalaf made "so little an impression" during the brief encounter that Dobson did not realize until later that he had already met Israel's most-wanted target.Khalaf was born in northern Jaffa in 1933, close to Tel Aviv.