Security organization of Saddam Hussein
Essentially, there were five rings of protection, ranging from personal bodyguards to large formations capable of putting down military coups. The innermost rings were headed by persons of family or clan loyalty, but, even so, the organizations were split and cross-checked one another.
Some analogies can be drawn between the way Iraqi security organizations, originally with a limited function, became omnipresent in the society, and the way the Nazi Schutzstaffel (SS), originally Adolf Hitler's "security squadron", became a "state-within-a-state." Iraq had no key security leader equivalent to Heinrich Himmler, but the Nazis also did not have a tribal society with tribal loyalties.
The Nazis still intermixed Party and State organizations to avoid having too much power in one place, just as the Soviet Union would mix Party, Army, and Organs of State Security. Moscow, for example, had division-sized formations from the Army (106th Guards Airborne Division), KGB (Dzerzhinsky Guards) and Party/Interior Ministry (Taman Guards).