International relations

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The field of international relations dates from the time of the Greek historian Thucydides.
The official portraits of King Władysław IV dressed according to French, Spanish and Polish fashion reflects the complex politics of the Polish–Lithuanian Commonwealth during the Thirty Years' War.
Empires of the world in 1910
NATO International Security Assistance Force in Afghanistan
The United Nations Secretariat Building at the United Nations headquarters in New York City
The World Bank headquarters in Washington, D.C.
NATO E-3A flying with USAF F-16s in a NATO exercise

Scientific study of interactions between sovereign states.

- International relations
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70 related topics

Alpha

Chronology of the universe as deduced by the prevailing Big Bang theory, a result from science and obtained knowledge

Political science

Scientific study of politics.

Scientific study of politics.

Chronology of the universe as deduced by the prevailing Big Bang theory, a result from science and obtained knowledge

Modern political science can generally be divided into the three subdisciplines of comparative politics, international relations, and political theory.

Plaster cast bust of Thucydides (in the Pushkin Museum) from a Roman copy (located at Holkham Hall) of an early fourth-century BC Greek original

Thucydides

Athenian historian and general.

Athenian historian and general.

Plaster cast bust of Thucydides (in the Pushkin Museum) from a Roman copy (located at Holkham Hall) of an early fourth-century BC Greek original
The ruins of Amphipolis as envisaged by E. Cousinéry in 1831: the bridge over the Strymon, the city fortifications, and the acropolis
Thucydides Mosaic from Jerash, Jordan, Roman, 3rd century AD at the Pergamon Museum in Berlin
Bust of Pericles
10th-century minuscule manuscript of Thucydides's History of the Peloponnesian War
Pericles's Funeral Oration (Perikles hält die Leichenrede) by Philipp Foltz (1852)
Bust of Thucydides residing in the Royal Ontario Museum, Toronto
Double herm showing Herodotus and Thucydides. Farnese Collection, Naples
Thomas Hobbes translated Thucydides directly from Greek into English

At the same time, Thucydides's influence was increasingly important in the area of international relations during the Cold War, through the work of Hans Morgenthau, Leo Strauss, and Edward Carr.

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The Twenty Years' Crisis

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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.

Stephen Walt

Stephen Martin Walt (born July 2, 1955) is the Robert and Renee Belfer Professor of International relations at the Harvard Kennedy School at Harvard University and a political scientist.

Official portrait, 1994

Joseph Nye

American political scientist.

American political scientist.

Official portrait, 1994

He and Robert Keohane co-founded the international relations theory of neoliberalism, which they developed in their 1977 book Power and Interdependence.

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Regime theory

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Regime theory is a theory within international relations derived from the liberal tradition that argues that international institutions or regimes affect the behavior of states or other international actors.

E. H. Carr

In the 1930s, Carr saw Adolf Hitler as a leader of a "have-not" nation struggling for economic justice and considered Lebensraum a zone of economic influence for Germany in Eastern Europe
In his 1939 book The Twenty Years' Crisis, Carr attacked Norman Angell as a utopian thinker on international relations
Carr's History of Soviet Russia runs to 14 volumes and has been extended into the 1930s by historian R. W. Davies and others.

Edward Hallett Carr (28 June 1892 – 3 November 1982) was a British historian, diplomat, journalist and international relations theorist, and an opponent of empiricism within historiography.

The ratification of the Treaty of Münster, part of the Peace of Westphalia that ended the Thirty Years' War.

Westphalian sovereignty

Principle in international law that each state has exclusive sovereignty over its territory.

Principle in international law that each state has exclusive sovereignty over its territory.

The ratification of the Treaty of Münster, part of the Peace of Westphalia that ended the Thirty Years' War.

The principle underlies the modern international system of sovereign states and is enshrined in the United Nations Charter, which states that "nothing ... shall authorize the United Nations to intervene in matters which are essentially within the domestic jurisdiction of any state."

Thucydides author of History of the Peloponnesian War is considered one of the earliest "realist" thinkers.

Anarchy (international relations)

Idea that the world lacks any supreme authority or sovereign.

Idea that the world lacks any supreme authority or sovereign.

Thucydides author of History of the Peloponnesian War is considered one of the earliest "realist" thinkers.

In international relations, anarchy is widely accepted as the starting point for international relations theory.

Member states of the United Nations (UN), as defined by the UN.

Sovereign state

Political entity represented by one centralized government that has supreme legitimate authority over territory.

Political entity represented by one centralized government that has supreme legitimate authority over territory.

Member states of the United Nations (UN), as defined by the UN.
De facto map of control of the world, May 2019

International law defines sovereign states as having a permanent population, defined territory (see territorial disputes), one government, and the capacity to enter into relations with other sovereign states.