The Six-Day War of 1967 changed the Arab/Israeli Conflict due to solid recognition of Israeli military power which caused other Middle Eastern countries to think twice about seriously backing Palestinians, caused a set back in Israeli civil rights which founded a tear in Israeli society, and forced the PLO to better organize due to their sudden lack of support from other Middle Eastern countries.
Early on, the U.S. had developed a "well-organized pro-Israel constituency- thus becoming a major player in the creation as well as the keeping of the state of Israel. In the early 1940s President Franklin Roosevelt declared that "no decision altering the basic situation of Palestine should be reached without full consultation with both Arabs and Jews."" No matter how vague, this statement was the first of its kind that officially stated a policy and even a role in the conflict between the current Palestine and the future Israel. Later in 1947 during the Truman administration, the U.S. began the creation of Israel by helping to pass the partition resolution and then became the first country to recognize Israel as a legitimate state. One theory has been developed by Stork that the U.S. viewed Palestinian nationalism the same as all Third World nationalism, thus relating it to the U.S. interventions against Iran and Guatemala in the 1950's and the confrontations against revolutionary nationalist movements with China and Vietnam subsequently later. This explanation paired with the Jewish and Zionist influence in the American government, as well as the guilt that America felt for the Jewish people after WWII provides a solid base for explaining why the U.S. had such a strong policy toward Israel. But then the policy took a step further. .
The U.S. became more and more entrenched into the Cold War thus causing an obsession within the U.S. against Communism. Since the Arabs had been associated with the Soviets, this provided the needed ingredients to solidify the stance that it would have with Israel for the duration of the Cold War.
