World War I
1914-1918
World War I (1914–1918) was a global conflict that began in Europe after the assassination of Archduke Franz Ferdinand and quickly expanded through alliances among major powers. It caused massive human and economic losses and culminated in the Treaty of Versailles, which reshaped Europe and contributed to subsequent political instability.
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The Event
World War I began due to rising nationalism, competition between empires, and complicated alliance systems in early 20th-century Europe. The assassination of Archduke Franz Ferdinand in 1914 acted as a spark that turned political tension into open war. As the conflict grew, many powerful countries joined, and new battlefronts opened not only in Europe but also in the Middle East.
The war introduced new military technologies, prolonged trench warfare, and massive human and economic losses. Major political changes, such as the Russian Revolution, also affected the course of the war. Although the fighting officially ended with the 1918 Armistice and the 1919 Treaty of Versailles, the decisions made after the war created new political tensions that later influenced global history.
Key Moments
Assassination of Archduke Franz Ferdinand — JUNE 28, 1914
Archduke Franz Ferdinand of Austria-Hungary and his wife were assassinated in Sarajevo by a Serbian nationalist. This incident triggered diplomatic crises that rapidly escalated into war.
Austria-Hungary Declares War on Serbia — JULY 28, 1914
Following failed negotiations and ultimatums, Austria-Hungary officially declared war. Due to alliance commitments, multiple European powers were drawn into the conflict within days.
Entry of the Great Powers — AUGUST, 1914
Germany declared war on Russia and France, and Britain entered after Germany invaded Belgium. The conflict expanded from a regional dispute into a continental war.
Allied Naval Blockade of Germany — 1914-1919
During World War I, the naval blockades were imposed on Germany. It restricted Germany's access to food, raw materials, and trade routes. This affected not only the battlefronts but also civilian life in the cities, leading to famine, price increases, and decreased production. The war thus became not only a military struggle but also an economic and social one.
Ottoman Empire Enters the War — OCTOBER 29, 1914
The Ottoman Empire joined the Central Powers after naval clashes with Russia. This decision expanded the war beyond Europe and opened Middle Eastern fronts.
Gallipoli Campaign — 1915-1916
Allied forces attempted to secure the Dardanelles Strait to open a supply route to Russia. The campaign failed after extended fighting, resulting in heavy casualties and strategic deadlock.
Battle of Verdun — FEBRUARY 21 -DECEMBER 18, 1916
One of the longest battles of the war, Verdun symbolized attrition warfare between France and Germany with enormous losses and little territorial change.
Battle of the Somme — JULY 1 - NOVEMBER 18, 1916
Initiated by the Allies to relieve pressure on Verdun, the Somme became one of the bloodiest offensives in history and marked the first major use of tanks.
Russian Revolution — MARCH, 1917
Economic hardship and social unrest led to the collapse of the Tsarist regime and the rise of Bolshevik ideology. Russia later withdrew from the war.
United States Enters the War — APRIL 6, 1917
The United States joined the Allies, sending troops and financial support. This shifted the balance of power against the Central Powers.
German Spring Offensive — MARCH 21, 1918
Germany launched a final large-scale offensive on the Western Front before American forces fully arrived. Initial gains were not sustained.
Armistice Signed — NOVEMBER 11, 1918
An agreement ended the wars on the Western Front, effectively bringing the war to a close. It was signed at Compagnie, France.
Treaty of Versailles — JUNE 28, 1919
The formal peace treaty imposed territorial losses and reparations on Germany, shaping post-war European politics. It is signed at the Palace of Versailles, France.
Through the Lenses of International Relations Theory
Realism
Assassination of Archduke Franz Ferdinand
The assassination was perceived not only as a security crisis but also as a matter of honor and prestige. State leaders interpreted the event through the lens of fear of reputational damage and humiliation, which rapidly escalated diplomatic tensions.
Entry of the Great Powers
The escalation of conflict is seen as a balance of power reflex; great powers believe that a rival state establishing regional or continental hegemony would weaken their own security. Therefore, interventions are aimed more at preventive balancing and power equilibrium maintenance than aggression. In the neorealist perspective, states act not ideologically, but based on relative power position and long-term security calculations; the resulting picture is interpreted as systemic balancing behavior.
Gallipoli Campaign
Gallipoli is regarded as an elite decision failure resulting from leaders’ misperception, hubris, and overconfidence; in other words, human nature and prestige politics lead to strategic error.
Battle of the Somme
The Battle of the Somme exemplifies a large-scale offensive assessed within elite decision-making and politics. Leaders considered prestige, reputation, and willpower, with decisions influenced by perception, cost-benefit analysis, and prudence.
Armistice Signed
It is regarded as a strategic choice by states that acknowledged the material costs and power limitations of continuous warfare. This move stemmed from national interests and the priority of state survival over ideology.
Neorealism
Assassination of Archduke Franz Ferdinand
The assassination is a trigger event. The root cause of the war is not a single crisis, but rather the multipolar structure of Europe, rising systemic tensions, and mutual distrust. The event plays a role in accelerating an already fragile security dilemma.
Entry of the Great Powers
The escalation of conflict is seen as a balance of power reflex; great powers believe that a rival state establishing regional or continental hegemony would weaken their own security. Therefore, interventions are aimed more at preventive balancing and power equilibrium maintenance than aggression. In the neorealist perspective, states act not ideologically, but based on relative power position and long-term security calculations; the resulting picture is interpreted as systemic balancing behavior.
Gallipoli Campaign
The goal of the operation is not to gain territory, but to weaken the opponent's logistics and strengthen one's own relative power position by achieving geostrategic control. Failure is explained more by material constraints, defensive advantage, and power projection limits than by leadership error.
Liberalism
Assassination of Archduke Franz Ferdinand
The classical liberal perspective is not very strong in directly explaining the "cause" of the assassination itself, because the theory is more concerned with domestic political conditions and societal tensions than with individual violence. Nevertheless, the event is attributed to weak political representation, limited civil liberties and the activities of nationalist groups operating outside democratic channels.
Entry of the Great Powers
The escalation of the war is linked to insufficient economic interdependence and weak commercial ties. Intensive trade relations could have acted as a deterrent by increasing the cost of war.
Gallipoli Campaign
The Gallipoli Campaign is evaluated less in terms of military tactics and more in terms of public accountability, representative governance, and economic interdependence. The decision-making process for foreign policy was concentrated within a small elite group rather than involving parliamentary oversight and extensive public discussion, thereby increasing the risk of military risks.
Russian Revolution
The revolution is interpreted as an internal crisis resulting from deep social inequality, economic hardship, and a deficit in political representation. The weakness of internal freedoms and inclusive governance mechanisms also undermines the stability of the state's foreign policy.
German Spring Offensive
It is explained not only by weak peaceful alternatives, limited economic interdependence, and narrowed diplomatic channels. In the absence of strong and sustainable commercial ties, non-military solutions appear less politically attractive. Thus, it is seen as a combination of the weakness of diplomatic and economic cooperation channels and the inadequacy of democratic checks and balances that limit leaders domestically.
Treaty of Versailles
The Treaty of Versailles is seen as a significant opportunity to establish a sustainable post-war peace. However, the resulting arrangement failed to provide long-term political stability because it did not produce a fair and inclusive settlement. The treaty's inclusion of harsh reparations, restrictive conditions, and perceived one-sided provisions undermined the process of mutual trust-building and reconciliation. The classical liberal perspective argues that for peace to be sustainable, mutual economic incentives and norm-based cooperation are necessary.
Neoliberalism
Assassination of Archduke Franz Ferdinand
The transformation of the assassination into a crisis is due to the lack of effective conflict-resolution mechanisms and strong international institutions. As institutional channels for crisis management were weak, information sharing and diplomatic coordination were insufficient.
Austria-Hungary Declares War on Serbia
The absence of reliable diplomatic mediation and information-sharing channels during the crisis caused a breakdown in cooperation between the parties. If stronger multilateral institutions and collective security arrangements had been in place, a diplomatic solution might have been more probable than a declaration of war.
Entry of the Great Powers
The international system of that era had not produced strong multilateral frameworks and monitoring mechanisms through which states could manage crises. Therefore, while states focused on protecting their short-term interests, they turned to conflict rather than pursuing absolute gains from cooperation, and the crisis rapidly escalated into war.
Allied Naval Blockade of Germany
The disruption of trade during the war decreased cooperation incentives between nations by breaking existing networks of economic interdependence. Stronger international economic regimes and trade governance mechanisms could have limited the use of economic tools as conflict instruments in this way.
Ottoman Empire Enters the War
The Ottoman Empire's entry into the war is linked to limited institutional ties and weak economic dependencies. If stronger institutional connections, economic reliance, and dependable international cooperation frameworks had existed, neutrality or other diplomatic options might have been more appealing and sustainable.
Gallipoli Campaign
The Gallipoli Campaign is explained by a lack of coordination among the allies and inadequate multilateral planning. Additionally, information asymmetry and limited institutional coordination among the allies led to inefficiencies in logistics and military planning.
Battle of Verdun
The long and exhausting conflict at Verdun is explained by the lack of institutionalized channels for negotiation and conflict management between the parties. Because there were no strong international institutions to manage the crisis or to maintain continuous diplomatic mediation, the parties were unable to establish a cooperative arrangement to jointly reduce the costs of the war. Furthermore, low institutional trust and limited information transparency made it difficult for the parties to obtain reliable information about the other side's intentions. This weakened incentives for cooperation and led to the continuation of the conflict rather than a diplomatic resolution.
Battle of the Somme
The Battle of the Somme is explained by problems in coordinating collective strategy among the Allies and by the high transaction costs of cooperation. Military planning could not be carried out in a fully coordinated manner because strong institutional coordination mechanisms and regular information-sharing channels were lacking to develop a common strategy.
Russian Revolution
This event is explained by the breakdown of domestic institutions within the state. Economic crisis and political instability have weakened both the state's domestic governance capacity and its international regime commitments. From this perspective, strong domestic institutions are seen as critical for maintaining international cooperation. When domestic institutions collapse, the state's capacity for international cooperation decreases, and existing institutional commitments (e.g., war alliances) become unsustainable.
United States Enters the War
The US entry into the war is seen not only as a military intervention but also as an attempt to preserve existing and future international cooperation structures. The increasing financial interdependence, credit relationships, and trade ties between the US and the Allied Powers demonstrated that the outcome of the war was crucial for the stability of these economic networks. From this perspective, the US role is also explained by its goal of creating a more orderly, rule-based international order, stronger international institutions, and more institutionalized multilateral cooperation in the post-war period. The neoliberal view interprets US involvement not only in terms of the balance of power but also within the framework of international institution-building efforts and long-term cooperation incentives.
German Spring Offensive
Without reliable communication channels and institutional mediation, states are more likely to resort to military solutions. This is an example of a breakdown in cooperation. Stronger multilateral negotiation frameworks would have made a diplomatic solution more likely than a conflict.
Armistice Signed
The ceasefire was made possible when the parties recognized the mutual gains from cooperation and accepted the high cost of the war. When diplomatic channels reopened, negotiation mechanisms began functioning, enabling the parties to halt the conflict. Lower transaction costs and increased institutional communication laid the groundwork for a negotiated settlement.
Treaty of Versailles
The Treaty of Versailles is seen as an institution-building attempt. However, because it did not create sufficiently inclusive international regimes and strong monitoring mechanisms, it could not provide long-term cooperation stability. Peace could have been more lasting if stronger international institutions and sustainable multilateral cooperation frameworks had been established.
Constructivism
Assassination of Archduke Franz Ferdinand
The assassination is not merely a security crisis, but is linked to strong national identity narratives and nationalist norms in the Balkans. Pan-Slavic identity and anti-imperial discourses have framed political violence as a legitimate tool for some groups.
Entry of the Great Powers
The entry of great powers into war is more closely associated with identity alignment and shared political narratives than with alliances. States have positioned themselves within specific civilizational blocs or political values.
Gallipoli Campaign
Gallipoli is not only a military operation, but is also associated with collective memory and national myth-making processes in different societies. This event has generated powerful narratives of national identity in many countries.
Battle of Verdun
Verdun has become a powerful symbol of national resistance in France. The conflict gained meaning not only through strategy but also through narratives of national identity and collective sacrifice.
Battle of the Somme
The Somme has created a shared trauma narrative that influences how societies perceive war. These experiences shape how war is collectively remembered.
Armistice Signed
The ceasefire is associated with shifts in public narratives about the meaning of war and the growing discourse of war-weariness. The legitimacy of peace has strengthened in societies.