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.
Digital History ID 3403 An article in the July 1947 issue of Foreign Affairs magazine, signed X, proposed that the West adopt a policy of containment toward the Soviet Union. The article's author, George Kennan, who set up the U.S. embassy in Moscow in 1943, called on the United States to take steps to prevent Soviet expansion. He was convinced that if the Soviet Union failed to expand, its social system would eventually break down. The Containment Policy would adopt two approaches. One approach was military; the other was economic. In 1947, U.S. Secretary of State George C. Marshall proposed a program to funnel American economic aid to Europe.