Saddam Hussain rise to power

Army officers with ties to the Ba'ath Party overthrew Qasim in a coup in 1963. Ba'athist leaders were appointed to the cabinet and Abdul Salam Arif became president. Arif dismissed and arrested the Ba'athist leaders later that year. Saddam returned to Iraq, but was imprisoned in 1964. Just prior to his imprisonment and until 1968, Saddam held the position of Ba'ath party secretary. He escaped from prison in 1967 and quickly became a leading member of the party. In 1968, Saddam participated in a bloodless coup led by Ahmad Hassan al-Bakr that overthrew Abdul Rahman Arif. Al-Bakr was named president and Saddam was named his deputy, and deputy chairman of the Baathist Revolutionary Command Council. According to biographers, Saddam never forgot the tensions within the first Ba'athist government, which formed the basis for his measures to promote Ba'ath party unity as well as his resolve to maintain power and programs to ensure social stability.
Iraq was strategic buffer state against the Soviet Union and Saddam was often seen as an anti-Soviet leader in the 1960s and 1970s. Some even suggested that John F. Kennedy's administration supported the Baath party's takeover. Although Saddam was al-Bakr's deputy, he was a strong behind-the-scenes party politician. Al-Bakr was the older and more prestigious of the two, but by 1969 Saddam Hussein clearly had become the moving force behind the party.
Succession:
In 1976, Saddam rose to the position of general in the Iraqi armed forces, and rapidly became the strongman of the government. As the ailing, elderly al-Bakr became unable to execute his duties, Saddam took on an increasingly prominent role as the face of the government both internally and externally. He soon became the architect of Iraq's foreign policy and represented the nation in all diplomatic situations. He was the de facto leader of Iraq some years before he formally came to power in 1979. He slowly began to consolidate his power over Iraq's government and the Ba'ath party. Relationships with fellow party members were carefully cultivated, and Saddam soon accumulated a powerful circle of support within the party.
In 1979 al-Bakr started to make treaties with Syria, also under Ba'athist leadership, that would lead to unification between the two countries. Syrian President Hafez al-Assad would become deputy leader in a union, and this would drive Saddam to obscurity. Saddam acted to secure his grip on power. He forced the ailing al-Bakr to resign on 16 July 1979, and formally assumed the presidency.
Shortly afterwards, he convened an assembly of Ba'ath party leaders on 22 July 1979. During the assembly, which he ordered videotaped (viewable via this reference), Saddam claimed to have found a fifth column within the Ba'ath Party and directed Muhyi Abdel-Hussein to read out a confession and the names of 68 alleged co-conspirators. These members were labelled "disloyal" and were removed from the room one by one and taken into custody. After the list was read, Saddam congratulated those still seated in the room for their past and future loyalty. The 68 people arrested at the meeting were subsequently tried together and found guilty of treason. 22 were sentenced to execution. Other high-ranking members of the party formed the firing squad. By 1 August 1979, hundreds of high-ranking Ba'ath party members had been executed.