Eisenhower & The Cold War

How did the United States react to the following 7 events, and why?

1. The Soviet Union exploded its first atomic bomb in 1949.
The U.S. reacted with outrage and fear because niow they weren't the only superpower with nuclear weapons and their enemy had nuclear weapons.
2. In 1951, the Iranian prime minister placed the oil industry in Iran under the Iranian government’s control.
This made the British people stop buying Iranian oil and the American people feared that they would turn to the Soviets for help.
3. The Guatemalan head of government gave American-owned land in Guatemala to peasants.
The American government feared their were Guatemalan communist sympathisers in the government and that another country would go commy and become hostile to the U.S.
4. In 1956, Britain, France, and Israel invaded Egypt and occupied the Suez Canal.
This would be seen as an act of agression to the Soviets who were still supporting Egypt while the Allies weren't and this would anger the Soviets and possibly make them go to war.
5. Soviet tanks invaded Hungary and fired on protesters in 1956.
When the Americans didn't respond they failed the truman doctirne and this made the U.S. seem horibble.
6. In 1957, the Soviet Union launched Sputnik.
This made the Americans think the Soviets could put nuke launchers into space and bomb them from space.
7. In 1960, the Soviet Union brought down an American U-2 piloted by Francis Gary Powers.
This proved that the Soviets knew of the American C.I.A. intelligence missions and this showed that not even at high altitude were the plains safe.