Lack of sleep can cause some of the same symptoms as depression -- extreme tiredness, loss of energy, and difficulty concentrating or making decisions. In addition, untreated depression may result in weight gain or loss, feelings of hopelessness and helplessness, and irritability.
Conflicts of national interest caused the World War II alliance between the United States and the Soviet Union to be replaced by a Cold War that lasted 45 years. Initially a dispute over the future of Europe, it grew to include confrontations around the world.
The Origins of the Cold War. There are now two great nations in the world, which starting from different points, seem to be advancing toward the same goal: the Russians and the Anglo-Americans. . . . Each seems called by some secret design of Providence one day to hold in its hands the destinies of half the world. Alexis de Tocqueville, Democracy in America (1835) Fred Inglis, The Cruel Peace: Everyday Life and the Cold War (1991) The origins of the cold war are not really that difficult to uncover. Nor are these origins that complex. Here in the west we have the tendency -- not unusual, I suppose -- to place the entire responsibility of the cold war upon the shoulders of the Soviet Union. And so, there have been a few events which have shaped this response.