Is consistent with a number of other theories. Other theories can be considered in terms of the security dilemma.

Westphalian sovereignty is the concept of nation-state sovereignty based on two things: territoriality and the absence of a role for external agents in domestic structures.

Scholars of international relations have identified the modern, Western originated, international system of states, multinational corporations, and organizations, as having begun at the Peace of Westphalia in 1648.[1] Both the basis and the conclusion of this view have been attacked by some revisionist academics and politicians, with revisionists questioning the significance of the Peace, and some commentators and politicians attacking the Westphalian system of sovereign nation-states.

The Concert of Europe (Russian: Система Европейского концерта, Sistema Evropejskogo koncerta), also known as the Congress System after the Congress of Vienna, was the balance of power that existed in Europe from the end of the Napoleonic Wars (1815) to the outbreak of World War I (1914), albeit with major alterations after the revolutions of 1848. Its founding powers were Austria, Prussia, the Russian Empire and the United Kingdom, the members of the Quadruple Alliance responsible for the downfall of the First French Empire. In time France was established as a fifth member of the concert. At first, the leading personalities of the system were British foreign secretary Lord Castlereagh, Austrian chancellor Klemens von Metternich and Russian tsar Alexander I. Charles Maurice de Talleyrand-Périgord of France was largely responsible for quickly returning that country to its place alongside the other major powers in international diplomacy.

The age of the Concert is sometimes known as the Age of Metternich, due to the influence of the Austrian chancellor's conservatism and the dominance of Austria within the German Confederation, or as the European Restoration, because of the reactionary efforts of the Congress of Vienna to restore Europe to its state before the French Revolution. The rise of nationalism, the unification of Germany and the Risorgimento in Italy, and the Eastern Question were among the factors which brought an end to the Concert's effectiveness. Among the meetings of the Great Powers during this period were: Aix-la-Chappelle (1818), Carlsbad (1819), Verona (1822), London (1832), Berlin (1878).

The versailles-washington system

included the abolition of the Anglo-Japanese Alliance, the withdrawal of Japanese troops from Siberia, the 5:5:3 ratio in capital ships in a naval arms limitation treaty that left the Japanese fleet inferior in strength to

those of the United States and Great Britain, the return of the Shantung concession to Chinese sovereignty, and the suspension of the Lansing-Ishii agreement. Many of these developments took place as a result of the Washington Conference. The most important agreement concluded

at the conference was the Nine Power Pact of 1922, which liquidated all existing treaties between the powers and China and replaced them with the Open Door principles so long espoused by the United States. The pact was an indisputable victory for American diplomacy. According to A. Whitney Griswold, it was the "apotheosis of the traditional Far Eastern policy of the United States."

The Yalta Conference, sometimes called the Crimea Conference and codenamed the Argonaut Conference, held February 4–11, 1945 , was the wartime meeting of the heads of government of the United States, the United Kingdom, and the Soviet Union, represented by President Franklin D. Roosevelt, Prime Minister Winston Churchill, and General Secretary Joseph Stalin, respectively, for the purpose of discussing Europe's post-war reorganization. The conference convened in the Livadia Palace near Yalta, in the Crimea. The meeting was intended mainly to discuss the re-establishment of the nations of war-torn Europe. Within a few years, with the Cold War dividing the continent, Yalta became a subject of intense controversy. To some extent, it has remained controversial.

Yalta was the second of three wartime conferences among the Big Three (Churchill, Roosevelt and Stalin). It had been preceded by the Tehran Conference in 1943, and it was followed by the Potsdam Conference in July 1945, which was attended by Harry S Truman, who replaced the late Roosevelt, Stalin, and Churchill, who was replaced mid-point by the newly elected British Prime Minister Clement Attlee.

The Potsdam Conference was held at Cecilienhof, the home of Crown Prince Wilhelm Hohenzollern, in Potsdam, occupied Germany, from July 17 to August 2, 1945. Participants were the Soviet Union, the United Kingdom, and the United States. The three nations were represented by Communist Party General Secretary Joseph Stalin, Prime Ministers Winston Churchill[2] and later, Clement Attlee,[3] and President Harry S. Truman.

Stalin, Churchill, and Truman—as well as Attlee, who participated alongside Churchill while awaiting the outcome of the 1945 general election, and then replaced Churchill as Prime Minister after the Labour Party's victory over the Conservatives—gathered to decide how to administer punishment to the defeated Nazi Germany, which had agreed to unconditional surrender nine weeks earlier, on 8 May (V-E Day). The goals of the conference also included the establishment of post-war order, peace treaties issues, and countering the effects of war.