The CIA was a intelligence collecting organization. They also went through secret tasks for American interests.
The Russians had created and detonated their own first Atomic bomb. With the Americans no longer more advanced, an arms race began.
Chinese Communist leader Mao Zedong declared the creation of the People's Republic of China. After, years of the Communist party gaining power in WWII.
Armed with Russian weapons, North Korea attacked South Korea. The UN then sent troops to help aid South Korea from being taken over by communism.
This caused the US to stock up on nuclear weapons. While, paying less for a conventional army. This caused more tension between the Soviets and the US, bringing them to the brink of war.
After, Stalin's death a brief power struggle took place in Russia. Then Nikita Khrushchev came up on top. Khrushchev was less threatening to the US then Stalin, which made America less on edge.
Due to the pressures of the Cold War, American scientists worked on creating a more powerful nuclear weapon. The hydrogen bomb was supposed to be 1000 times more powerful then previous advancements.
The US CIA helped a coup in Iran take power. They overthrown the previous leader despite him being elected by the people. This caused a long time resentment of the US in Iran.
Another coup, that replaced a political leader with a non-Communist one. However, this allowed a group of military leaders to control the country instead.
The Polish people heard of Krushchev's talks of peaceful co-existence. Due to the less Stalinized Russia they revolted, hoping to have a government with less Soviet leaders. After a few days, their demands were met.
President Nasser tried to take advantage of the US-Russian rivalry . He wanted to build a dam in the Nile river, and Britain and the US asked to fund it.
Due to the US not helping the President with building a dam. He tried to nationalize the Suez Canal, which could prevent oil transportation through the middle east.
Soviet soldiers and tanks crushed Hungarian revolution. America watches it in horror, not able to interfere. This caused a new level of hostility to the International relation .
Britain and France saw the nationaization of the canal as a threat to oil imports. They then sent an force to allow them to control it once more,
After, years of working in secret, Russia sent the first man-made satellite into space. It was a huge advancement of the time. And the development shocked the US. This caused the Russian-American space race.