The Cold War was between the Eastern Bloc (the Soviet Union and its satellite states), and powers in the Western Bloc (the United States, its NATO allies and others). It was all caused by mistrust and disagreement.
NO TRUST HERE
The Cold War lasted for about 45 years (1947 - 1991). Although, The Cold War was never a war where countries physically fought, but it was full of tension and hatred, like drama in school.