|You probably already
know that the Cold War was complicated. One of the problems is that historians
cannot all agree why it started. There are even arguments about when it
Most historians say the Cold War began soon after the end of World War 2 in 1945. However, relations between the USSR and Britain and the USA were often strained before that date. This Gallery and the next one look at this issue.
We have 3 case studies of incidents in this period which will help you to develop your own views on the Big Question. Look at the Big Question section to see exact details of what you have to do. When you are clear in your own mind, click on the case studies to begin your investigation.