Kanaan, as a young military officer, pledged allegiance to Hafez al-Assad, who seized power in 1970. Kanaan participated in the 1973
Yom Kippur War where he fought the Israelis in the
Golan Heights. After the
1982 Israeli invasion of
Lebanon, parts of which were already under Syrian military occupation, he was assigned to head the Syrian intelligence in Lebanon in that same year. His term lasted for twenty years until 2002. During his tenure in Lebanon, Kanaan gained a decisive Syrian influence over Lebanese affairs, and gradually subdued the warring Lebanese militias through a combination of diplomacy, bribery and force. During the 1980s, he developed collaborators with the predominantly Christian and previously
Lebanese Forces – Executive Command (LFEC) militia which was run by
Elie Hobeika, but it was only about 2,000 soldiers. After
Israel's withdrawal from its occupation of southern Lebanon in 2000, Kanaan extended Syria's influence there, and backed the
Hezbollah's takeover of the area. Syria established an absolute power in Lebanese elections of
1992,
1996 and
2000 through Kanaan. After
the Taif agreement in 1989, it was Kanaan who determined fourteen electoral districts of Lebanon. On behalf of Syrian government, he vetoed the anti-Syrian candidates, urged the political leaders to include pro-Syrian candidates in their candidate lists, and balanced the number of religious candidates with secular ones in some districts. In addition, Syria exerted influence on security and judicial appointments in the country through Kanaan. On the other hand, the head of Lebanon's Sureté Générale (General Security Directorate),
Jamil Al Sayyed, reported directly to Kanaan, often bypassing the civilian leadership of the Lebanese government. After being an early backer of Syrian president
Bashar al-Assad as a successor to his father, Kanaan was summoned back to Damascus in October 2002 to become the head of Syria's
political security directorate, replacing
Adnan Badr Hassan in the post. He was succeeded in Lebanon by
Rustum Ghazali, his deputy. In 2004, after a string of bombings targeting leading
Hamas members given sanctuary in Syria, claimed by Syria to have been the work of Israeli intelligence, Kanaan was assigned by president al-Assad to the cabinet post of interior minister in October 2004 in a cabinet reshuffle. The cabinet was headed by
Muhammad Naji al-Otari. and Ghazali, due to their involvement with the occupation of Lebanon, and also due to suspicions of "corrupt activities". Kanaan was not regarded as a member of Bashar al-Assad's inner circle. He was known to have close links with the former vice president,
Abdul Halim Khaddam who had resigned in the summer of 2005. Some believed that they both might have developed a challenging powerbase within the
Syrian Regional Branch of the
Arab Socialist Ba'ath Party against Bashar al-Assad in future.
Business activities Ghazi Kanaan was one of the shareholders of LibanCell, a cellular phone company. The company was awarded a ten-year contract in 1994. ==Personal life==