until some progress has been made in digging the foundations". Summary In 1936 Edward Hallett Carr resigned from the Foreign Office where he had worked for the better part of twenty years to take up the position of the Woodrow Wilson Chair in the Department of International Politics at the University College of Wales Aberystwyth. It would give him what he could never have had in the Foreign Office: the freedom to write and lecture on foreign affairs, something he had long wanted to do. That is how The Twenty Years’ Crisis, 1919 - 1939 was born, although his preferred title for the book was actually Utopia and Reality. The book talks about international relations in general but more specifically it is devoted to the interwar period, although the author originally wanted to debunk the pretensions of liberalism while providing a way out of the impasse that was the inter-war crisis. Furthermore, he also wanted to show his criticisim towards Woodrow Wilson who used as a slogan the right of national self-determination and Carr considered to be one of the reasons for the crisis during the period between wars. The writer was determined to find a solution or at least an alternative to what was happening, to what he named a “new society based on new social and economic foundations”. The book includes five parts and fourteen chapters in which the first part is dedicated to the study of the science of international politics; a second part that is devoted to seeing the causes and effects of the international crisis between wars; a third part that deals with the concepts of politics, power and morality and the relationship that exists between them; a fourth part specializes on the law as an engine for international change, and, finally, a fifth in which Carr presents his conclusions. Firstly, Carr gives us the context in which international politics stands on, its science is actually developing its first baby steps, because there was no general desire to take the management of international affairs out of the hands of the experts or even to pay serious and systematic attention to what the professionals were doing. However, the war of 1914-18 ended this form of viewing war as a problem which affects only military experts, therefore, the science of international politics emerged as a response to a very successful popular demand. There was a problem with