Passage: Three of the targets on the Mossad's list lived in heavily guarded houses in Lebanon that were beyond the reach of previous assassination methods. In order to assassinate them, Operation Spring of Youth was launched as a sub-operation of the larger "Wrath of God" campaign. On the night of April 9, 1973, Sayeret Matkal, Shayetet 13, and Sayeret Tzanhanim commandos landed on the coast of Lebanon in Zodiac speedboats launched from Israeli Navy missile boats offshore. The commandos were met by Mossad agents, who drove them to their targets in cars rented the previous day, and later drove them back to the beaches for extraction. The commandos were disguised as civilians, and some were dressed as women. In Beirut, they raided guarded apartment buildings and killed Muhammad Youssef al-Najjar (Operations leader in Black September), Kamal Adwan (a Chief of Operations in the PLO) and Kamal Nasser (PLO Executive Committee member and spokesman). During the operation, two Lebanese police officers, an Italian citizen, and Najjar's wife were also killed. One Israeli commando was wounded. Sayeret Tzanhanim paratroopers raided a six-story building that served as the headquarters of the Popular Front for the Liberation of Palestine. The paratroopers met strong resistance and lost two soldiers, but managed to destroy the building. Shayetet 13 naval commandos and Sayeret Tzanhanim paratroopers also raided PLO arms-manufacturing facilities and fuel dumps. Some 12–100 PLO and PFLP members were killed during the attacks.Three attacks quickly followed the Lebanon operation. Zaiad Muchasi, the replacement for Hussein Al Bashir in Cyprus, was killed by a bomb in his Athens hotel room on April 11. Two minor Black September members, Abdel Hamid Shibi and Abdel Hadi Nakaa, were seriously injured when their car was bombed in Rome.Mossad agents also began to follow Mohammad Boudia, the Algerian-born director of operations for Black September in France, who was known for his disguises and womanizing. On June 28, 1973, Boudia was killed in...

Question: Who did Zaiad Muchasi replace?
Hussein Al Bashir