It is SaO2 that measures oxygen saturation of hemoglobin, and it should be clear that it depends on the partial pressure of arterial oxygen. If PaO2 drops, there's less dissolved oxygen, and therefore less saturation of hemoglobin with oxygen.
The Cuban Missile Crisis was a propaganda victory for the United States and an undisclosed blow to containment. Some may contend that since the Soviet Union ultimately fell, the policy of containment was successful. This is an overly generous statement.
Presidential Leadership in the Cold War. Long before becoming president, Ronald Reagan claimed the prevailing policies of containment and dÃ©tente would not bring a satisfactory end to the Cold War. The objective of containment was to stop the Soviet Union from forcibly spreading communism beyond the territories it already ruled or dominated.