European balance of power
The European balance of power is a doctrine in international relations built on a single, stubborn idea: no one nation should ever be allowed to dominate the whole of Europe. For centuries, that principle shaped every alliance, every war, and every peace treaty on the continent. It sent armies marching across the Alps, drove kings to forge marriages with their rivals, and eventually produced two world wars when the system finally buckled.
The doctrine did not emerge from any one theory or treaty. It grew out of hard experience, from the fall of ancient Greece to a Macedonian king, from the ambitions of Julius Caesar and Napoleon Bonaparte, from the grinding horror of the Thirty Years' War. Each time one power drew close to mastering Europe, the others grouped together to stop it.
How did this idea take hold? Who enforced it, and at what cost? And what happens to the balance when empires collapse and new ones form in their place?
Athens and Sparta together repelled the Persian invasion from the east, but the moment the external threat receded, those same two cities turned against each other in the Peloponnesian War. Their mutual destruction opened the door for the Kingdom of Macedon to impose a single rule over Greece, exactly the outcome their rivalry had made possible.
Alexander the Great then pushed that single rule further than any Greek had imagined, annexing the entire Persian Empire and carrying Macedonian culture across a vast stretch of the ancient world. When he died in 323 BC, there was no successor strong enough to hold what he had built. His generals divided his realm into competing Hellenistic kingdoms, and the fragmentation that followed was, in its own way, a restoration of balance.
Rome would eventually dominate the western and eastern Mediterranean through the Punic Wars and the Macedonian Wars, drawing the whole of Italy into its orbit. But Rome, too, would face its own internal crisis. Julius Caesar's rise alarmed enough senators that they assassinated him on the Ides of March in 44 BC. His adoptive son Octavian Augustus then defeated the assassins, becoming the first Roman Emperor in 27 BC. The empire that followed reached its peak during the Pax Romana, before fracturing in the third century and splitting permanently between a Latin West and a Greek East.
Charlemagne united most of present-day France, Germany, Switzerland, Austria, the Low Countries, and Italy under one rule, and was crowned Holy Roman Emperor on Christmas Day in 800 by Pope Leo III. That concentration of power immediately created a problem: the Byzantine Empire saw a second emperor as a direct challenge. The resulting "problem of two emperors" kept the two powers locked in a tense standoff rather than open warfare.
The Holy Roman Emperor and the Pope in Rome spent centuries as the twin universal powers of Europe, but their conflict over the investiture controversy produced an unexpected consequence: it allowed autonomous city-states to take root in northern Italy and an independent French monarchy to grow under the House of Capet. The Norman Conquest of England in 1066 and the fall of Sicily in 1130 added further weight to a continent where power was dispersing in multiple directions at once.
The Crusades, launched after the Eastern Schism divided Orthodox and Catholic Christians, reshaped Europe's political map in ways their architects had not planned. The First Crusade in 1099 reopened trade routes across the Mediterranean and set off a commercial revolution. The Fourth Crusade in 1204 produced the Venetian maritime empire as a side effect. A vast portion of the French nobility marched east under their king during the Crusades, and the discipline of that shared campaign contributed to the formation of a strong, centralized French monarchy. The Battle of Bouvines in 1214 marked the beginning of medieval France's rise as a genuine continental force.
Portugal formed the first European colonial empire in 1415 with the conquest of Ceuta, and the Age of Discovery that followed poured enormous wealth into the Iberian Peninsula. By 1519, Charles V of Habsburg had accumulated a staggering range of titles: he was already Duke of Burgundy, King of Spain, and Archduke of Austria before being elected Holy Roman Emperor. His empire encircled France on nearly every side.
Francis I of France found himself squeezed by Habsburg territory and responded by forming an alliance with the Ottoman sultan Suleiman the Magnificent after his defeat at the Battle of Pavia. A Christian king allying with a Muslim sultan against a fellow Christian emperor was a sign of how far purely dynastic and territorial calculation had displaced older religious solidarities. Meanwhile, Charles used gold and silver flowing from the newly conquered Americas to pay for the defense of his Austrian lands against the Ottomans at the Siege of Vienna and his Italian possessions against France.
The scale of Habsburg power eventually became its own undoing. Charles V, exhausted by the effort of holding together a multi-national empire spanning continents, conducted a series of abdications in 1556. He divided his domains between his son Philip II of Spain and his brother Ferdinand, who had been Archduke of Austria in Charles's name since 1521. That split permanently separated the Spanish and Austrian branches of the Habsburg family, which rivals across Europe had deliberately worked to bring about.
The Thirty Years' War, fought from 1618 to 1648, is described in the source as one of the longest and most destructive conflicts in European history. Fought primarily in Central Europe, between 4.5 and 8 million soldiers and civilians died from battle, famine, and disease. Some areas of present-day Germany lost more than half their population.
The war's alliances scrambled the expected lines. Catholic France allied with Protestant nations to defeat the Habsburg alliance, because the French monarchy cared more about breaking Habsburg encirclement than about defending Catholic solidarity. England, the newly independent Netherlands, and Sweden each pursued their own advantage. The Netherlands formed the Dutch East India Company in Indonesia during this period. Sweden built an empire in northern Europe. England began colonizing North America.
The Treaty of Westphalia in 1648 that ended the war restructured how Europe thought about sovereignty. The Holy Roman Empire became more decentralized, and its constituent states, including Prussia, were permitted to pursue their own foreign policy independent of the Austrian Habsburg Emperor. France emerged as the main continental power, a position confirmed by both the Treaty of Westphalia and the subsequent Treaty of the Pyrenees. Sweden and France were formally named "Guarantors of the imperial constitution," authorized to intervene if the balance was threatened.
In the 18th century, the pattern of power came to be called the "stately quadrille": Austria, Prussia, Great Britain, and France repeatedly changed sides with one another to prevent any single nation from pulling ahead. The term captured how the dance of alliances had become a kind of routine, almost ritualized, even as the wars it produced were anything but.
England and the Dutch Republic had spent the 16th and 17th centuries paying large subsidies to continental allies to field armies capable of checking France or Spain. Those Grand Alliances reached their peak in the wars against Louis XIV and Louis XV. After Britain's success in the Seven Years' War, which it fought alongside Prussia, many of the other European powers began to see Great Britain as the greater threat. France entered the American War of Independence specifically to cut Britain down by helping secure independence for the Thirteen colonies.
Prussia demanded territorial compensation after the Russo-Turkish War of 1768-1774, which set in motion the Partitions of Poland. Russia was regarded, at least in its own view, as having joined the group of balance-of-power guarantors in 1779 under the Treaty of Teschen, which ended the War of the Bavarian Succession. When Austria proposed making the Duke of Bavaria a King of Burgundy in 1785, the Fürstenbund was formed in opposition, treating the proposal as a threat to the balance.
Napoleon's campaigns had brought France to the point where it directly or indirectly controlled most of Europe except Russia. After his defeat, the victorious Great Powers, Prussia, Austria, Russia, and Great Britain, gathered at the Congress of Vienna in 1815 to redraw the map and restore the balance. For a time, the arrangement held.
Britain announced in 1818 that it would not intervene in continental affairs that did not directly affect it. Tsar Alexander I's plan to suppress future revolutions was rejected. Historian Roy Bridge judged that the Congress system had "failed" by 1823. The Congress of Verona in 1822, in the words of historian Artz, "marked the end" of the system. No Congress was convened during the upheavals of 1848, when demands for national borders drawn along ethnic lines put the Vienna settlement under pressure it could not absorb.
The Crimean War of 1854-55 and the Italian War of 1859 shattered relations among the Great Powers. Then in 1871, the Prussian-led German Empire was created, excluding Austria. Prussia had already defeated Austria and France in separate wars in quick succession. For twenty years after that, Otto von Bismarck managed to keep the balance through a web of treaties and alliances, including the Triple Alliance. After Bismarck's departure, Kaiser Wilhelm II turned Germany toward Weltpolitik, a drive for global influence, and the fragile new alliances proved unable to contain what followed.
The Treaty of Versailles, which closed out the First World War, explicitly aimed to abolish the balance-of-power system and replace it with the League of Nations. Nations were to be organized along ethnic lines, though German-speaking Austria and German-majority areas of the Czech lands were not permitted to merge with Germany.
Europe fractured instead into three blocs in the 1920s and 1930s: liberal democracies led by Britain and France, communist states led by the Soviet Union, and authoritarian nationalist regimes led by Germany and Italy. Britain declined to condemn the Soviet invasion of Poland in 1939 but declared war on Germany. Later it sided with the Soviet Union after Germany invaded it, a temporary wartime alliance shaped by the same logic that had always governed the European balance: the strongest power in the room must be countered.
After the Second World War, the balance shifted to a new scale. The Eastern Bloc aligned with the Soviet Union and the Western Bloc with France, the United States, and the United Kingdom. NATO's first Secretary General, the British Lord Ismay, stated the organization's founding purpose plainly: "to keep the Russians out, the Americans in, and the Germans down." Many former communist countries in Central Europe have since joined both the EU and NATO, pushing the boundary between the two blocs further east. How the balance continues to shift, particularly after Brexit in 2020, remained an open question.
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Common questions
What is the European balance of power doctrine?
The European balance of power is a principle in international relations holding that no single state should be allowed to achieve hegemony over a substantial part of Europe. It was enforced through ever-changing alliances among competing powers across centuries of European history.
When did the European balance of power concept emerge?
The doctrine developed gradually through practical experience rather than from any single founding moment. Its roots are traced back to ancient Greek city-states and the power struggles of the Roman Republic, but it became a formally recognized principle of European diplomacy from the Peace of Westphalia in 1648 onward.
What was the Concert of Europe and how did it relate to the balance of power?
The Concert of Europe was the system established at the Congress of Vienna in 1815 by the victorious Great Powers, Prussia, Austria, Russia, and Great Britain, to maintain the European balance of power after the Napoleonic Wars. Historian Roy Bridge judged that it had "failed" by 1823, and historian Artz identified the Congress of Verona in 1822 as marking its end.
What was the stately quadrille in European power politics?
The stately quadrille refers to the 18th-century pattern in which the four major European powers, Austria, Prussia, Great Britain, and France, repeatedly shifted alliances to prevent any one of them from achieving dominance. Wars including the War of the Spanish Succession, the Seven Years' War, and the War of the Austrian Succession were driven at least in part by this logic.
How did the Thirty Years' War affect the European balance of power?
The Thirty Years' War, fought from 1618 to 1648, killed between 4.5 and 8 million people and caused population declines of over 50% in some German regions. The Treaty of Westphalia that ended it decentralized the Holy Roman Empire, elevated France to the leading continental power, and established Sweden and France as formal guarantors of the imperial constitution.
What did NATO's first Secretary General Lord Ismay say about the purpose of NATO?
Lord Ismay, the British first Secretary General of NATO, stated the organization's initial goal was "to keep the Russians out, the Americans in, and the Germans down." This phrasing summarized how the post-World War II balance of power was institutionalized through the Western alliance.
All sources
22 references cited across the entry
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- 6webBalance of power INTERNATIONAL RELATIONSEncyclopaedia Britannica
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- 10bookThe Holy Roman Empire: A Historical Encyclopedia 2 volumesBrian A. Pavlac et al. — ABC-CLIO — 2019
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- 12webThe European Balance of PowerÉric Schnakenbourg, Fabrice Jesne — EHNE
- 13bookKatharina die Große: Legitimation durch Reform und ExpansionJan Kusber — 2021
- 14bookDas Alte Reich, 1648-1806: Das Reich und der österreichisch-preusssische Dualismus (1745-1806)Karl Otmar von Aretin — 1993
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- 21citationHistory of Germany from the Medieval Empire to the PresentDiethher Raff — 1988
- 22webBrexit, Germany, and the European Balance of PowerBlogactiv — October 23, 2018