THE CAIRO DETENTE: Following Nasser's death, the PLO continued to maintain warm relations with Cairo well into the mid-1970s, with regular PNC (the Palestinian parliament in exile) held in Cairo. In the picture, Arafat and PLO leaders mourn Black September martyrs at the opening of a PNC meeting in December 1970. Behind Arafat stand Khaled Al-Hassan and Abu Youssef Al-Najjar (also assassinated by Barak in Beirut in 1973)