Idealism in international relations in the context of Liberal international relations theory

Political philosophy studies the theoretical and conceptual foundations of politics. It examines the nature, scope, and legitimacy of political institutions, such as states. The field investigates different forms of government, ranging from democracy to authoritarianism, and the values guiding political action, like justice, equality, and liberty. As a normative field, political philosophy focuses on desirable norms and values, in contrast to political science, which emphasizes empirical description.

Political ideologies are systems of ideas and principles that outline how society should work. Anarchism rejects the coercive power of centralized governments. It proposes a stateless society to promote liberty and equality. Conservatism seeks to preserve traditional institutions and practices. It is skeptical of the human ability to radically reform society, arguing that drastic changes can destroy the wisdom of past generations. Liberals advocate for individual rights and liberties, the rule of law, private property, and tolerance. They believe that governments should protect these values to enable individuals to pursue personal goals without external interference. Socialism emphasizes collective ownership and equal distribution of basic goods. It seeks to overcome sources of inequality, including private ownership of the means of production, class systems, and hereditary privileges. Other strands of political philosophy include environmentalism, realism, idealism, consequentialism, perfectionism, nationalism, individualism, and communitarianism.

The Twenty Years' Crisis: 1919–1939: An Introduction to the Study of International Relations is a book on international relations written by E. H. Carr. The book was written in the 1930s shortly before the outbreak of World War II in Europe and the first edition was published in September 1939, shortly after the war's outbreak; a second edition was published in 1946. In the revised edition, Carr did not "re-write every passage which had been in someway modified by the subsequent course of events", but rather decided "to modify a few sentences" and undertake other small efforts to improve the clarity of the work.

In the book, Carr advances a realist theory of international politics, as well as a critique of what he refers to as the utopian vision of liberal idealists (which he associates with Woodrow Wilson). Carr's realism has often been characterized as classical realism. Carr argues that international politics is defined by power politics. He describes three types of power: military power, economic power, and power over opinion. He argues that political action is based on a coordination of morality and power.

Zbigniew "Zbig" Kazimierz Brzeziński (/ˈzbɪɡnjɛf brəˈzɪnski/ , Polish: [ˈzbiɡɲɛf kaˈʑimjɛʐ‿bʐɛˈʑij̃skʲi] ; March 28, 1928 – May 26, 2017) was a Polish-American diplomat and political scientist. He served as a counselor to Lyndon B. Johnson from 1966 to 1968 and was Jimmy Carter's National Security Advisor from 1977 to 1981. As a scholar, Brzeziński belonged to the realist school of international relations, standing in the geopolitical tradition of Halford Mackinder and Nicholas J. Spykman, while elements of liberal idealism have also been identified in his outlook. Brzeziński was the primary organizer of The Trilateral Commission.

Major foreign policy events during his time in office included the normalization of relations with the People's Republic of China (and the severing of ties with the Republic of China on Taiwan); the signing of the second Strategic Arms Limitation Treaty (SALT II) with the Soviet Union; the brokering of the Camp David Accords between Egypt and Israel; the overthrow of the US-friendly Mohammad Reza Pahlavi and the start of the Iranian Revolution; the United States' encouragement of dissidents in Eastern Europe and championing of human rights in order to undermine the influence of the Soviet Union; supporting the Afghan mujahideen against the Soviet-backed Democratic Republic of Afghanistan and, ultimately, Soviet troops during the Soviet–Afghan War; and the signing of the Torrijos–Carter Treaties relinquishing U.S. control of the Panama Canal after 1999.